Minimum: OS: Windows Vista Service Pack 2 32-bit Processor: Intel Core 2 DUO 2.4 GHz / AMD Athlon X2 2.7 GHz Memory: 2GB Hard Disk Space: 20 GB free Video Card: DirectX10 Compatible ATI Radeon HD 3870 / NVIDIA 8800 GT / Intel HD 3000 Integrated Graphics Video Card Memory: 512 MB Sound: DirectX Compatible