OS: Windows® XP/Vista™/Windows 7™ Processor: Pentium IV 2 GHz Single Core or 100 % compatible CPU Memory: 512 MB RAM Graphics: DirectX® 9-compatible AGP or PCI Express 64 MB video card or better DirectX®: DirectX® 9 Hard Drive: 4.5 GB of free hard disk space Sound: DirectX® 9-compatible 16-bit sound card (optional)