Nice read. I've got Windows 7 Professional installed on my Advent Milano netbook, and surprisingly it works really well by default. It wasn't pre-installed, so I had to format the netbook and then install from scratch with the default settings.
I haven't even done any customising really, but it works like a charm.
I'm very impressed by how well it runs, especially since on a previous netbook I owned I had XP installed, and that didn't run too well.