Nick, that is the exact model I am writing to you now with.
HP Mini 110, with Intel Atom, 1gb memory, 1.66ghz, etc etc.
Mine is XP Home.
Does me fine for my Astrophotography, imaging with my Canon 350d, while running Cartes du Ciel, surfing the net, etc all at the same time.
Only thing it doesn't like is if I try to do other things while I am doing a LIVE Video broadcast.
Also remember that these machines don't have a disk drive, so everything has to be loaded by memory stick