OS: Windows XP (SP2), Vista (SP1), 7 Processor: Intel Core 2 Duo or AMD Athlon 64 X2 Memory: 1 GB RAM (1.5 GB for Vista/7) Hard Disk Space: 1.2 GB Free HDD space Video Card: GeForce 7900GTX/ATI RADEON X1900 XT or higher DirectX®: 9.0c