i tried what u said and i think it works.
-i downloaded the drivers from ati
-forced the RPM install
-then it worte some info at the end it wrote "enter fglrxconfig...."
well i entered it and follwoed the intracutions
and now i am able to use larger resolutions and see some 3d apps
i think its because some thing called Messa that i installed when i install MDK
Try to install it
i think it helped me
by the way i have a Tyan Radeon 9600 pro