Finally figured out how to use ATI tool and got 8998 on 3D05. I couldn't clock as much I used to w/ my old system (600/800 ish) but around 58x/74x. Higher memory kept on artifacting. Anyways, all I did was install the XTreme-G MovileForce VS 101.70 driver, flashed unlocked bio, installed ATI Tool (this was tricky since sometimes it worked and sometimes didn't, keep reinstalling until you can tweak w/ clock settings in ATI tool, save settings, set settings to start the OC value on all users, and you also have to check other things. It will stick then.
P.S. If you get kernel error, keep reinstalling til you get the muliple cores, and memories on ati panel to tweak. You also have to make sure you change the settings to stick. Good luck if you are still struggling w/ darn vista.