Its a known-bug with Cat 3.1. I finally found a fix that worked from Rage3D. From the windows start menu, click on run and type:
atiprbxx.exe /g
It'll bring up the smartgart .dll, from there hit "basic agp settings" and it'll backdoor you into your advanced property tab. It might have taken 2 minutes, but I always killed it before it got there, as no .dll should take 2 minutes to open unless something is wrong. Cat 3.2 should be out soon, so hopefully they fix this issue.
Chiz