I have a Dell XPS 710 H2C system with a quad core (overclocked to 3.19 Ghz), two 150 GB HDs (in Raid 0) 4 GB of ram, with dual 8800 GTXs (in SLI mode), running XP, 2 DVD drives, and an SB X-fi ExtremeMusic audio card. I loaded the game and it seems to work ok until I get to a large map and then the mouse scrolling responce is sluggish. I don't know what my frame rate is but it must be low.
My Nvidia driver is: XP 162.18