Recommended System Requirements  Operating System: Microsoft Windows XP (SP3) / Windows Vista (SP1) / Windows 7  Processor: Intel Core 2 Duo E6420 Dual Core at 2.13Ghz / AMD Athlon 64 X2 5200 Dual Core at 2.60Ghz  Video  Card: 256 MB VRAM - nVidia GeForce GTS 240 / ATI Radeon HD 3870  Memory: 2 GB RAM (XP) / 3 GB RAM (Vista & 7)  Hard Disk: 12 GB of free Hard Drive Space  Sound: DirectX 9.0c compatible sound card  Direct X: 9.0c  Controls: Keyboard & Mouse  Installation: DVD-ROM Drive