Sorry, I misread your first post.
The same drivers that work with XP Home will work with XP Pro.
If you got the full version, you probably will have to format the harddrive.
It's easy enough to find out. Boot to the XP CD and tell it to install. If it tells you that you already have an operating system then, yes, you'll have to reformat before you install Pro.
When you boot to the XP CD, it has all the utilities you need to repartition and format the drive so you don't really need to make boot disks.
For plenty of resources on how to do a clean install (format/install) of XP, start on
this page.