OS: Windows XP/Vista
Processor: Intel Pentium D Dual Core @ 2.6 GHz
Memory: 2 GB
Hard Drive: 12 GB Free
Video Memory: 256 MB
Sound Card: DirectX Compatible
DirectX: 9.0c
Keyboard & Mouse
DVD Rom Drive

Recommended:

OS: Windows Vista
Processor: Intel Core 2 DUO @ 2.2 GHz or Athlon 64 X2 3800+
Memory: 3 GB
Hard Drive: 12 GB Free
Video Memory: 512 MB
Sound Card: DirectX Compatible
DirectX: 10
Keyboard & Mouse
DVD Rom Drive
XBOX 360 Controller