1. Purchase the conventional "retail upgrade version" of Windows XP Pro.
2. Uninstall any currently installed third-party antivirus or firewall programs.
3. Disconnect all peripheral hardware devices, but not the monitor, keyboard or mouse.
4. While at your Windows XP Home desktop screen, insert the Windows XP Pro CD in the CD drive.
5. Select the default "Upgrade" option....do not select "New Installation".
6. Defrag your drive after upgrading.
7. Reinstall your antivirus program & turn-on the firewall.
8. Visit the Windows Update website and download the necessary updates.
9. Visit the support website of the manufacturer of your computer to download
any additional drivers required for Windows XP.
--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User
Be Smart! Protect your PC!
http://www.microsoft.com/security/protect/