Trans-XP, the software to make any application window and most of all parts of Windows XP transparent.
Transparent windows help you to keep your desktop organized - there's no need to minimize or to move a window to see the content of a window lying under the topmost window. Make the topmost window transparent and you can see through it!

Using Trans-XP you can easily set a list of your favorite windows and the software will constantly check for any new window - if transparency is enabled, Trans-XP will immediately make a pre-defined window transparent.