Do you have an XP Pro "Upgrade" media, or the XP Pro "Full" (as if for a new PC) media?
If you have the Pro upgrade version, it's a wee bit more involved, but not much.
Here's one way to do it... there are other ways of accomplishing the same:
Home-->Pro Upgrade version
1) Go to
www.bootdisk.com, d/l the W98se bootdisk creator, create a W98se bootdisk on a 3.5" floppy
2) Go into BIOS and set your floppy drive as the first boot device
3) Boot up using the boot floppy, and at the DOS prompt, issue the command 'format c:" to wipe your old OS off the HD.
4) Place XP Pro Upgrade disk in CD-ROM drive
5) Shut down, set devices back to desired boot order (usually CD-ROM, then HD, then floppy... but your choise)
6) Boot up (should boot to the XP Pro install disk, proceed with installation.
7) At some point early in the install, you will be asked to insert the "upgrade qualifying media"... just put in your Home CD to prove the upgrade is valid.
8) Follow prompts to complete the Pro install -- There is no need to
install before upgrading to Pro.
Pro Full version
1) Set CD-ROM as your first boot device in BIOS, put Pro dick in CD-ROM and reboot
2) Follow installation instructions and just reformat the HD when prompted, to wipe the old OS and start fresh.
[EDIT]You guys type too fast!!!!!!!