Controling movie clip

That´s my problem:
I want to load a movie clip with a button into another movie. This button has to control the timeline in the main movie. Is this possible to do? How do I do this?
Thanks a lot.

if you want to control anything in the main timeline use _root

For instance, if you want to stop and start the main movie use:

_root.stop();

and

_root.play();