Too easy to find in the tutorials

It’s been a little while since I’ve used Flash and I can’t figure out the most simple of things.

I’m using Flash MX. I have made an infinate menu from the tutorial in this site.

Now the problem, How in the world do I link the buttons!

All I want to do is play the movies I have in the Library from the buttons on the menu.

Please help. I’d appreciate it.