No, it's not, but you can get SP2 upgrade from Microsoft Website.
windows vista Any.
Windows 98, Windows ME, and Windows 2000.
win2000 professional
Windows 98 SEWindows NT workstation
Download a driver for your sound card.
Windows 95, Windows NT 4, Windows 98 (Standard and Second Edition).
windows xp home edition windows 98 windows NT 4.0 workstation windows 2000 professional
Windows 2000 can be upgraded directly using Windows XP Professional or Windows Server 2003. The newest operating system in it's class is Windows Vista Business or Windows Server 2008, depending on whether you are using Professional or Server, respectively.
According to my findings, Windows 8 Consumer Preview cannot be upgraded to Windows 8 Professional. The operating system is 'dead-ended' and must be removed from the system first. I have found that there are some technical tutorials that show users how this can be done, but it is a much longer and trickier process.
No. Server editions of Windows cannot be upgraded to Home versions and vice versa.
Windows 2000 Server and Windows NT Server 4.0 (SP5).
Windows NT is what Windows 2000 is upgraded from.