How do i unload a movie?

on my page you click a picture gallery button and a flash gallery loads an external movie on a level 4, i created an X (close) button and used the unload command but it doesnt do it.
my current unload button is on the new movie, do i have to put it in the base layer?
Can a movie unload it’s self?

I’m also having some problems with remote linking, it finds, then doesnt find the paths etc, it’s a headache, but i’ll stress that later once all the pages are done.