Help with movie clips navigation please

Hey all,

I know this is a pretty basic question, but I can’t work it out so here goes.

I have my main movie. On the main timeline I have a movie clip with my menu buttons in it. A few keyframes along, on the main timeline, I have a movie clip with my rectangles that I want the content to show up in.

Now, ideally I’d like to have all the content stuff to go in the same movie clip as the boxes. But, how can I tell a menu button in the menu movie clip to goto a certain frame in the seperate box movie clip? Is it possible?