Window XP Maximize Screen Problem

[TriStarGod]

Im not sure if this is the correct area to post this but after uninstalling ATI Multimedia Center, the right-side of the screen reveals the desktop when some of my programs are maximized as shown with firefox maximized in this screen shot: http://img168.imageshack.us/im...indowmaxproblemil7.jpg

Im just wondering if anyone has a solution to this.