I want to try an older Catalyst driver, 9.1, because some people claim that it clears up the z-fighting bug in GTA IV ... but I can't install it. Every time I try, the only option I get is to install ATI Registration ... which I have no interest in. I'm guessing it thinks I have a Catalyst driver already installed, for some reason? When I install the latest drivers, I don't have this problem ... I get the option to install the driver as well as the registration. Can any of you help me? I REALLY want to try this driver because the z-fighting thing is driving me crazy ... Specs: card, 4890, os XP 32 bit. Any advice will be greatly appreciated!!!