The game seems to play ok (ish) but when I go to view the map sometimes I get lots of tiny little squares and then a beige/brown screen and then my pc (sometimes) turns off. I've tried changing various settings but it makes no difference. I have dual core 8400 (i think),4870 512 mb (9.6driver),4 gig and vista 64 bit. Any help on this would be great.