Windows
OS: Windows 7, Vista SP1, XP SP2 
Processor: Pentium® IV or AMD® equivalent at 2.0 GHz 
Memory: 1 GB RAM 
Graphics: 256 MB 3D DirectX 9 Compatible video card (not onboard) with Pixel Shader 1.1 support 
Hard Drive: 10GB of free space 
Sound: Soundcard (Surround Sound support recommended)