Check out this theme, it's really, really nice. For a while now i'd been back to old Windows Classic, having got sick of the garishness, however slight, involved in most themes. Must say that this one "Plex Style 2" is a beauty. I'm using one of the classic themes and it's flawless. I very highly recommend it.
Ok, i'll stop gushing now :D
Here's a pic.
http://www.angelfire.com/space2/liquidacid/DeskTop.jpg