Hi all!! I've had this problem for a week now don't know what to do! I realise the GTA IV min. requirements say graphics card with at least 256mb and blah blah but all other games I have with the similar min. requirements work well. I have an iMac 20 inch, the older one, intel core 2 duo, 2 gig ram, high enough processor, and an Ati Radeo x1600 graphics card with 128ram. I'm on XP Sp3. When I begin the game, everything works fine, cut scenes and all, But when i actually begin driving I realise that I cannot see the floor or walls or anything!!! It's kinda like driving in open space! Lol. And can still crash into invisible things. I installed windows 7 to see if it made a difference. In that, it ran in a tiny window but everything was visible. I need to make it work in xp sp3? Any suggestions? I have bootcamp 3.1 and downloaded the latest ati driver as well from what i can tell. Any patch or hot fix for this problem? I googled and youtubed it but couldn't find much helpful!! Please help!!! GTA IV looks like a crazy game!! Thanks to everyone.