I had significant difficulty getting OpenCL drivers to work with Win7 and my setup without having tearing issues upon boot up. It finally worked with Catalyst version 11.1, after about 20 hours of tinkering. Was it worth the effort? Maybe, maybe not. I certainly did learn quite a bit through the process, and I'm genning .70 BTCs per day at this point.
Are you installing the entire Catalyst package? If so, what version of the software? Other than XP, what OS are you attempting?
Is this the only GFX card in your build? If not, what other card(s) are you using? What mining client are you using?