Operating system Microsoft Windows XP (SP2) / Vista # CPU Core 2 Duo 2 GHz # 2 GB of RAM # 9 GB of free hard disk space # 3D-graphics adapter with 512 MB memory, compatible with DirectX 9.0c (NVidia GeForce 7900 or ATI Radeon x1950) # Sound device compatible with DirectX 9.0c # DirectX 9.0s