Minimum: Microsoft Windows® 2000/XP (Windows 95/98/ME/NT Not Supported) Pentium 4 1.5Ghz or Athlon XP Equivalent 512MB RAM 100% DirectX 9.0c compatible video card which supports Hardware TnL and Pixel Shader 2.0 (GeForce FX / Radeon 9500 or higher) 100% DirectX 9.0c Compatible Sound Card 5.0GB free disk space 100% Windows 2000/XP compatible Mouse and Keyboard (Gamepads and controller are not supported) Recommended: Pentium 4 2.4Ghz or Athlon XP/64-bit equivalent 1024MB RAM ATI X800 series, Nvidia GeForce 6800 series or higher video card 100% DirectX 9.0c Compatible Sound Card, Sound Blaster X-Fi series 5.0GB free disk space