Editing Windows Vista Theme

Hi who know in what program can I edit Windows Vista RTM default theme?

#436322

I asked that question on Poweruser TV, Episode 40. I can't remember Brad Wardell's answer right now, but you can take a look on http://www.poweruser.tv/

(sorry about my annoying voice)

#437136

http://www.aeroxp.org/board/index.php?showforum=41

#437143