I decided to try Dirt ATI wu's on a different machine, and it is working. Running Catalyst 12.1 & BM 7.0.25 but not using the GUI - BOIC Tasks instead. Hopefully the Wu's will falidate. If not I guess I'll try Catalyst 12.3.

Side note: Here is something for WinXP users. Beginning with Catalyst 12.2 AMD has removed OpenCL support for WinXP. I am sure this was mentioned in another thread. Just want to be sure it is out there.