There are four versions of Windows 2000.
http://www.microsoft.com/windows2000...ew/default.asp
- Windows 2000 Pro
- Windows 2000 server
- Windows 2000 advanced server
- Windows 2000 datacenter server
2000 pro is a work station O/S
Windows 2000 server is what you need as advanced server and datacenter server are most likely more robust then what you need.