Just Some Stuff

[Proton]

(MS Paint XP is the best)

Vista MS Paint is best,
no contest.
Better zoom than XP (no need for that weird invisible 10x zoom but), 10 undos rather than 3 and it's default palette isn't disgusting, along with no ribbon or the 7's attempt at making it more like PS.

And Argyle, it doesn't.
Graphic Gale's alpha channel way of doing transparency makes it whatever colour was set as the alpha channel's the background in MS Paint.
Photoshop, GIMP, Fireworks etc.'s makes the background black with its magic wands.