OS: Windows XP SP3/ Vista SP1/ 7 Processor: 2.0Ghz Dual core CPU (any Core 2 Duo or AMD X2 or better) RAM: 1GB (XP), 2GB (Vista), 2GB (Windows 7) Hard Drive: 20 GB space free (10 GB free after install) Video Card: 256MB Video Card using Shader Model 3 (Nvidia GeForce 8800GT, AMD Radeon 3850 and above) DirectX: Version 9.0c