Supported OS: Windows XP (SP2), Windows Vista Processor: 2.8 GHz Pentium 4 XP / 3.2 GHz Pentium 4 Vista Memory: 1 GB RAM XP / 1.5 GB Vista (2 GB recommended) Graphics: DirectX 9.0c compatible with Shader Model 3.0, requires 128 MB or more and contain one of these chipsets: Nvidia 6600 or greater, Radeon X1300 or greater Sound: DirectX 9.0c compatible Hard Drive: 4 GB of free space or more