It is possible to upgrade
http://support.microsoft.com/default.aspx?scid=kb;en-us;292607&Product=winxp
Windows XP Supported Upgrade Paths
View products that this article applies to.
This article was previously published under Q292607
SUMMARY
This article describes the supported upgrade paths for Windows XP.
MORE INFORMATION
Microsoft Windows 3.x
No supported upgrade paths
Microsoft Windows 95
No supported upgrade paths
Microsoft Windows 98, Microsoft Windows 98 Second Edition, Microsoft
Windows Millennium Edition
Windows XP Home Edition Retail (Full) Version
Windows XP Home Edition Upgrade Version
Windows XP Professional Retail (Full) Version
Windows XP Professional Upgrade Version
Microsoft Windows NT 3.51 Workstation
No supported upgrade paths
Microsoft Windows NT 4.0 Workstation
Windows XP Professional Retail (Full) Version
Windows XP Professional Upgrade Version
Microsoft Windows 2000 Trial Edition
No supported upgrade paths
Microsoft Windows 2000 Professional
Windows XP Professional Retail (Full) Version
Windows XP Professional Upgrade Version
Microsoft Windows NT 3.51 Server
No supported upgrade paths
Microsoft Windows NT 3.51 Server with Citrix
No supported upgrade paths
Microsoft BackOffice Small Business Server
No supported upgrade paths
Microsoft Windows XP Home Edition
Windows XP Professional Retail (Full) Version
Windows XP Professional Upgrade Version
Microsoft Windows XP Home Edition with SP1
Windows XP Professional with Service Pack 1 Retail (Full) Version
Windows XP Professional with Service Pack 1 Upgrade Version
NOTES
Microsoft does not support upgrading Windows XP Home Edition with Service
Pack 1 (SP1) to Windows XP Professional without SP1.
All Versions of Windows NT 4.0 (Workstation, Server, Enterprise, and
Terminal Server) require Service Pack 5 to be installed prior to upgrading
to Windows XP. However, as noted earlier in this article, you cannot
upgrade any of the Windows NT 4.0 Server products to Windows XP Home or
Professional editions. To obtain Service Pack 5, visit the following
Microsoft Web site:
http://www.microsoft.com/windows
Subbu
This posting is provided "AS IS" with no warranties, and confers no rights.
