Minimum System Requirements:
Windows XP or Windows Vista or Windows 7
Processor 2.2 GHz
1 GB RAM (2 GB on Windows Vista or Windows 7)
256 MB graphics accelerator (GeForce FX or better class, ATI 9600 class or better)
DirectX 9 compatible sound card
DirectX 9.0
900 MB of free hard drive space

Recommended System Requirements:
Dual or Quad Core Processor 2.2 + GHz
2 GB RAM
512 MB video card: GeForce 6 or better, ATI Radeon 9800 or better