OS: XP SP2 / Vista SP1 / Windows 7 CPU: For XP 2.0 GHz P4 processor or equivalent; For Windows Vista and Windows 7 2.4 GHz P4 processor or equivalent RAM: For XP 1 GB RAM / Windows Vista and Windows 7 1.5 GB RAM* Hard Drive: At least 1.5GB** of hard drive space with at least 1 GB additional space for custom content and saved games. Video: 128 MB Video Card with support for Pixel Shader 2.0 Supported Video Cards: Nvidia GeForce series: FX5900 or better, and all NVidia G, GT, GTS, and GTX video cards. ATI Radeon™ series card 9500 series or better, and all ATI X, X1, and HD video cards; Intel® Graphics Media Accelerator (GMA): GMA 3-Series, GMA 4-Series