Windows XP Home and Professional (SP2), Windows 2000 (SP4) :

• Intel Pentium 4 processor, 2.2 GHz Recommended
• 512 MB RAM
• 750 MB free disk space for installation
• 1024x768 VGA with True Color
• Microsoft Internet Explorer 6.0 (SP1 or higher)
• OpenGL, or Direct3D capable workstation class graphics card

Windows Vista (SP1) :

• Intel 3.0 GHz or greater
• 2 GB RAM or greater
• 2 GB free hard disk available not including installation
• 1280 x 1024 32-bit color video display adapter (True Color) 128 MB or greater
• Direct3D capable workstation class graphics card with 128 MB or greater is required

Windows 7 :

• Intel 3.0 GHz or greater
• 2 GB RAM or greater
• 2 GB free hard disk available not including installation
• 1280 x 1024 32-bit color video display adapter (True Color) 128 MB or greater
• Direct3D capable workstation class graphics card with 128 MB or greater is required

Windows x64 :

• Windows XP, Vista and Seven 64-bit
• AMD64 or Intel EM64T processor
• 1GB RAM, 3GB for Windows Vista and Seven 64-bit