OS: Windows 7 / Vista / XP Processor: 2 GHz Intel Dual Core processor / 2.6 GHz Intel Single Core processor, or AMD equivalent (with SSE2) RAM: 1GB RAM (XP), 2GB RAM (Vista / Windows7) Hard Drive: 32 GB available space Video Card: 256 MB DirectX 9.0c compatible card (shader model 3) DirectX: Version 9.0c