windows-server-2003/admin/wmi/wbem/scripting/docsamples/js/iswbemobjectset/item.js

// The following sample enumerates all instances of the class
// Win32_LogicalDisk, and extract the the member with a specified 
// relative path.  

var objServices = GetObject('cim:root/cimv2');
var objEnum = objServices.ExecQuery ('select * from Win32_LogicalDisk');

// Note that the Item method is the default method of this interface 
var objInstance = objEnum ('Win32_LogicalDisk="C:"');

WScript.Echo (objInstance.Path_.DisplayName);