It is possible, but you will need to remove xp from your
pc first, reformat your hard drive then install windows
98 followed by windows xp. This would then create a dual
boot system. It looks complicated but it isn't. You would
then have a menu at boot up which asks which operating
system you want to boot up to.
Although it is not impossible to install windows 98 on a
seperate partition on an xp pc it does require the
changing of registry options and does require some skill.
The easisest option is to install windows 98 first
followed by window xp.
Hope this helps
John Barnett - MVP
Associate expert