Loading swf file into container

Hey everyone. I got a problem and hopefully someone can help.

i have my main movie with the preloader taking up the first 2 frames and then the main content starting on frame 3. in frame 3 i also have a container in which my external movies load into when a menu button is pressed.

my question is, I would like one of my external movies to automaticly load into the container box right after the main movie has loaded. how would i go about coding that?

please advise. this has been driving me mad for the past couple weeks.
thank you
:crazy: