I've been told by my IT department that there's no way of upgrading an installation of XP home to XP pro. The only way to do it, they allege, is to do a clean install of Pro and loose all the data on the machine.
You have more than 5 computers on your home network?
Do you need to connect to a domain?
No to both.
However, I do need to run IIS and I do need remote services. AFAIK I can't get either on home without indulging in some dreadful hacks.
What's really annoying me about this is the price of the Xp pro upgrade disks. I've already paid for a home licence, but the price of an upgrade is almost as much as I'd pay for an off-the-bat copy of Xp pro.