After experiencing crashes and graphic glitches i've tried to install SC4 on the same machine but under Windows xp instead of W7 and i must say that it runs much better. So i think W7 is to blame.
Hi there, I'm having more or less the same problem as you. Running W7 with Intel Core 2 Duo E6600 - Asus P5N-E 650i SLI - Corsair KIT 2GB PC6400 DDR2 800 Mhz - GeForce 8800 GTS 320 MB, the game crashes quite often (sometimes to desktop, sometimes it freezes the pc and i have to reboot). Please let us know if you find a solution. Thanks a lot.