Windows Vista Home Basic

• 1 GHz 32-bit (x86) or 64-bit (x64) processor
• 512 MB of system memory
• 20 GB hard drive with at least 15 GB of available space
• Support for DirectX 9 graphics and 32 MB of graphics memory
• DVD-ROM drive
• Audio Output

Windows Vista Home Premium / Business / Ultimate

• 1 GHz 32-bit (x86) or 64-bit (x64) processor
• 1 GB of system memory
• 40 GB hard drive with at least 15 GB of available space
• Support for DirectX 9 graphics with:
• WDDM Driver
• 128 MB of graphics memory (minimum)
• Pixel Shader 2.0 in hardware
• 32 bits per pixel
• DVD-ROM drive
• Audio Output

Windows XP Home & XP Professional

• Pentium 233 MHz processor (300 MHz is recommended)
• at least 64 MB of RAM (128 MB is recommended)
• at least 1.5 GB of available hard-disk space
• CD-ROM drive