OS: Windows XP SP2/Vista SP1/7 Processor: (XP) 2.0 GHz P4 processor or equivalent; (Vista and Windows 7) 2.4 GHz P4 processor or equivalent RAM: (XP) 1 GB RAM; (Vista and Windows 7) 1.5 GB RAM Hard Drive: 4 GB available space Video Card: A 128 MB Video Card with support for Pixel Shader 2.0 DirectX: Version 9.0c