Supported OS: Microsoft Windows XP® or Windows Vista® Processor: 2.4+ GHZ Intel® or 2.0+ GHZ AMD™ Memory: 1 GB RAM (Windows XP®,) 2 GB RAM (Windows Vista®) Graphics: NVIDIA® GeForce 6 series (6800GT or better,) ATI™ 1300XT series or greater (X1550, X1600 Pro and HD2400 are below minimum system requirements) Hard Drive: At least 12 GB of free space Sound Card: DirectX® 9.0c compatible sound card and drivers DirectX®: 9.0c