The use of custom profiles for added choices when publishing a movie works
the same way it does in XP's Movie Maker 2....
A forum poster, after doing lots of testing over the past couple days,
reported the custom profiles work if you use the main pull-down menu, but
don't appear in the pick-list of choices when you start with the 'Tasks'
In XP, either the main menu or the Tasks menu gets you the full set of
choices, so it looks like a bug in Vista.
I added info to my website's Vista > Movie Maker > Intro page....
website references are to www.papajohn.org