OS: XP Service Pack 3 / Vista / Windows 7 Processor: 1.8 GHz Pentium 4 or equivalent (Rec: 2.0GHz Pentium 4 or equivalent) Memory: 2 GB RAM (Rec: 3GB RAM) Hard Disk Space: 500 Mb Space Free Video Card: ATI or NVidia card w/ 256 MB RAM (Rec: ATI or NVidia card w/ 512 MB RAM) DirectX®: Direct X 9.0c Sound: Direct X 9.0 sound device