OS: Windows XP,/Vista/7 (all 32/64 bit) Processor: Intel Core 2 Duo E4400 @ 2.0 GHz, AMD Athlon X2 5000+ @ 2.6 GHz RAM: 1 GB Hard Drive: 8 GB available space Video Card: 512 MB and Shader 3.0, DirectX 9.0c NVIDIA GeForce 8600 GTS, ATI Radeon HD 2600 XT DirectX: Version 9.0c