OS: Windows XP SP3/7 Processor: Intel Pentium 4 3.0 GHz, AMD Athlon 64 3500+ or equivalent processor RAM: 2 GB RAM Hard Drive: 3 GB available space Video Card: 256 MB DirectX 9.0c-compatible, NVIDIA GeForce 6600 or better, ATI Radeon X800 or better dedicated video card supporting Shaders Model 3