[-=Seth=-]

it's a little bit strange men, because i install SH on XP and i actually runnin' it on 2000 pro, cuz' my XP blow Up (long history) and i didn' have this problem, try to reinstall only the drivers of the card and reinstall the game, remeber make a backup of your save games, maybe that correct the problem (dunno if that gonna work, but try it, because there's only one way to know)