Ter,
I had some terrible issues when the new 'puter running XP arrived! Now that I've worked my way through them, things are going swimmingly.
First: Check the XP website AND the website for all of your peripherals. XP doesn't support a lot of the functions of various combined machines -- my HP LaserJet 1100 will print but scanning is no longer possible. No Driver. Oh, my Microtek flatbed scanner is out, too. (Microtek says it works, but that try resulted in having to completely reload XP!!! GRRR!!) I now scan, when necessary, using the old 'puter (W98SE) then transfer the file -- pain in the A#$%!!
Be prepared to buy some new software -- for example, Norton System Works has a new program to run with XP, the old one doesn't (and it was only a year old).
For the most part, I like XP. But it has been an expensive switch.
Nancy