Flash website navigation question

Hi all,

i’m trying to create a flash website where the intial loading of the website, the navigation is a seperate .swf file. I have the navigation loading, but I have no idea what the actionscript should be or if its possible to use an external .swf file to code for the buttons.

What is or is there actionscript where I can load a movie into an empty movie clip from movie 1 using a button from movie clip 2?

Thanks in advance.