Sorry but I dare to argue with you and tell you folks that I have a GeCube 9600 PRO 128MB and that it works like a miracle. I played UT2K, Q3 and no problem.
UT2K -> 800*600 Full detail
Q3 -> 1024*768 Full detail 120 FPS
so....
I had to do some digging but it paid off...
If you have problems in installing it please let me know. I have installed it succesfully on MDK 10.0, MDK 10.1. About FC1 - didn't make it. FC2 didn't try.
And about drivers you can find ATI 3D drivers on their site:
http://www.ati.com/support/driver.html
Good luck! Sometimes they work...it's all about not letting go...