i'm running bootcamp xp sp3 i bought a game but i couldn't play, i asked to the people who sold it, and my pc wasn't capable. i have the newest imac and this are my problems: 1.my mac has 8 GB RAM, on windows only 0.5 GB 2.they say i haven't got a graphic card, wich isn't true. do i have to buy a new one? and wich one? it has to be a geforce or a radeon.