CPU: Intel Core 2 Duo 2.4 GHz / AMD Athlon 64 X2 4600+ or higher RAM: 2.0 GB Windows XP and Windows 7, 3.0 GB Windows Vista GPU: NVIDIA 8800 GT 512 MB / ATI 4650 or better DX: DirectX 9.0c OS: Windows XP (SP 3), Windows Vista (SP 2) or Windows 7 (SP 1) STO: 10.5 Gb or more of free space Sound: DirectX 9.0c compatible sound card ODD: DVD drive or Internet connection (for installation)