PC Minimum:
CPU: P3 850mhz or equivalent
RAM: 128mb
Video: OpenGL support
Audio: 16 bit sound
Hard Drive: 80mb free space
Internt: 56k modem
OS: Windows 98

PC Recommended:
CPU: P3 1ghz or higher
RAM: 256mb
Video: OpenGL support
Audio: 16 bit sound
Hard Drive: 80mb free space
Internt: Cable modem
OS: Windows XP

Mac Minimum:
CPU: G4
RAM: 256mb
Video: OpenGL support
Audio: 16 bit sound
Hard Drive: 80mb free space
Internt: 56k modem
OS: OSX 10.3 (Panther)

Mac Recommended:
CPU: G5 or higher
RAM: 512mb
Video: OpenGL support
Audio: 16 bit sound
Hard Drive: 80mb free space
Internt: Cable modem
OS: OSX 10.4 (Tiger)