|Well, you are a little low on RAM. The game requires 1.5GB under Vista/7. |
Video card requirements aren't too high. Do you have at least a GeForce 7300GT or Radeon X1300 with 256MB of video memory? Are the correct video drivers from nVidia or ATI installed? The Microsoft video drivers that came with Win7 are great for Office apps, but games may not like them.
Turbocharged 939 | Dual-core Opteron 185 @ 3.2GHz | 2x 8800GTS in SLI | 4GB PC3200 @ CL2 | A8N32-SLI Deluxe |1TB | PCI-E X-Fi Titanium Pro | Swan D1080MKII + Dayton 10" 125w sub | W7 Ultimate