I was thinking of getting Windows XP Pro for GPO. Does anybody know if it makes any difference? I already have regular XP home edition or whatever it is called.
I think you'll find that XP pro will be just fine. I've been using it for a while now. You might like to consider tweaking it though - check out www.MusicXP.net - sadly, it's full of annoying advertising these days, but it's still a good site.
For the purposes of GPO, XP Home and XP Pro should be indistinguisable. I run GPO on XP Home.
XP Pro offers more networking flexibility and support for dual processors, but that's about it.