Sorry for reviving a really old Thread, but I felt it's better than creating a completley new.
I seem to have the same problem, my specs are:
NZXT Guardian 921 Mid Tower
Windows 7 64-bit
Intel C2Q E8400 @ 2.66GHz
eVGA GeForce 8800GTX
4Gb DDR2 RAM
I really doubt that this game is...