Minimum System Requirements:

800 MHz Intel Pentium III or 800 MHz AMD Athlon or 1.2GHz Intel Celeron or 1.2 GHz AMD Duron processor
128 MB of RAM
8 speed CD / DVD drive
915 MB of free hard disk space
(+ 635 MB if video card does NOT support DirectX Texture Compression)
32 MB video card with DirectX 9.0 compatible drivers ("GeForce" or better)
Sound Card with DirectX 9.0 compatible drivers Keyboard & Mouse

Recommended System Requirements

Intel Pentium IV or AMD Athlon XP processor 256(+) MB of RAM
16 speed CD / DVD drive
1.55 GB of free hard disk space
(+ 635 MB if video card does NOT support DirectX Texture Compression)
64(+) MB video card with DirectX 9.0 compatible drivers ("GeForce 3" / "Radeon 8500" or better with DirectX Texture Compression support)
DirectX 9.0 compatible sound card with surround sound
Gamepad (USB or Joystick Port)
Keyboard & Mouse