Supported OS: Microsoft Windows® XP SP2 or Vista Processor: 2.8 GHz or faster Memory: 1 GB RAM or more for Windows XP (2 GB for Vista) Graphics: DirectX® 9.0c compatible video card, Shader Model 3.0 required, 256 MB or better, NVIDIA GeForce 6800 or better (7300, 7600 GS, and 8500 are below minimum system requirements), ATI X1600 Pro or better (X1300, X1300 Pro and HD2400 are below minimum system requirements) Hard Drive: 7.5 GB free space Sound: DirectX® 9.0c compatible sound card