How to uninstall Windows XP to 98

Some people say it isnt possible to uninstall XP. Fact is, it is! Use your Win98 Cd-ROM Autostart thing and go to DOS. There go to your XP-Drive and do a format -u. This will delete any XP-Files. Add to format -u an r and it restores the overwritten files from the last os (you won't see the RESTORED_OS-Folder since it is implemented in the Partition