In a few weeks I'm gonna be getting a 2.8Ghz iMac and was gonna install a copy of either XP or Vista on it (via Bootcamp) for gaming. My question is which is better? I know Vista supposedly organises your games better or stuff but I saw on the back of Command and Conquer 3 that Vista required 128Mb video card whereas XP was only 64, so which is the better for gaming? I have both but would prefer to use Vista cos it's prettier.