Stop moving whole window while dragging

When a window is dragged, u can see the contents inside that window(in Windows XP), u can disable this as follows:

• Open the registry editor
• Locate HKEY_CURRENT_USER\Control Panel\Desktop
• In the right pane find the value name DragFullWindows
• The default value for DragFullWindows is 1, set it to 1

For this tweak to take effect you may need to Logoff or Restart windows.