WindowsOS: Windows XP or Windows VistaProcessor: 2.5Ghz Intel P4 or AMD Ahtlon processorMemory: 512MB RAMGraphics: NVIDIA Geforce 6600GT with 256MB VRAM Pixel Shader 2.0 or ATI Radeon x800 with 256MB RAM Pixel Shader 2.0DirectX®: DirectX 9.0cHard Drive: 6 GBSound: OpenAL sound compatible audiocard