Hi, I've just installed Portal on my MBP with ATI X1600 (128mb) running XP SP2 via boot camp. While I've been able to play games like Far Cry with all settings on max without any problem cool, Portal suffers from bad screen tear, even if settings are set low. Could this be a driver issue - I'm using the Apple drivers as I assumed these would be best? Or perhaps it's just a problem that this game suffers from. Cheers, M. EDIT: I should have put this thread in 'Apple Games'!