Prosessor : Intel(R) Pentium (R) 4 3.0 GHz or Intel (R) Core (TM) 2 E6300 or AMD Athlon (TM) 64 3000+
RAM: 1 GB of RAM
VGA: 3D hardware accelerator card required - 100% DirectX(R) 9.0c-compliant 256 MB video card and drivers

Supported Chipsets:
All NVIDIA(R) GeForce(R) 7800 GT 256 MB RAM and better chipsets (excluding 8400 cards)
All ATI Radeon (TM) X1800 256 MB RAM and better chipsets (excluding X1800 GTO, Radeon HD2400, Radeon HD2600, and Radeon HD3450)
DX: DirectX(R) 9.0c (Included)
OS: Microsoft(R) Windows XP(TM), Microsoft(R) Windows Vista(R)
http://gamesystemrequirements.com/
HDD: 8 GB of uncompressed hard disk space (plus 400 MB for the Windows(R) swap file and 12 KB free for saved games)
Sound: 100% DirectX(R) 9.0c-compliant true 16-bit sound card and drivers