What do you mean by good?
If you get ahold of the CDs or DVD, you will be able to return your computer to its factory condition…aka…a usable state. I figure that’s pretty good.
Do you really need XP Pro, if not, then I’d leave well enough alone. If you really must have XP Pro then you may want to follow the path of those who have gone before you. Forum member Rahul has laid out some pretty decent instructions.
http://www.siliconpopculture.com/sonytr/viewtopic.php?t=807
See if this helps you out. :D
I recommend burning or copying all the drivers found in the C:\Windows\Drivers folder a MUST. This will save you time trying to find all or most of the drivers later if you want to do your own clean install.