Operating Systems
Windows For Workgroups 3.11 (Win32s required)
Windows 95, 95A, 95B, 95C (Winsock 2 required)
Windows 98, 98SE
Windows ME
Windows NT4 (SP2+ required)
Windows 2000
Windows Server 2003
Windows XP (any, including 64)
Windows Longhorn Server
Windows Vista (any, including 64)

System Requirements
Windows XP (SP2) / Windows 2000 (SP4 or later)
50 MB available space on your hard drive
128 MB RAM
Intel Pentium 300 MHz processor (or equivalent)

Note:
Not compatible with Windows 9x systems