Nav bar movie help

I am trying to make a navigation bar that slides (using easing) into the movie from the left to the right. Then on that bar is another movie, which is text. I can get the movie to slide in with the text movie on it, but I cannot get the text movie to play (simple tweening). I can get the text movie to play when I put it on the main movie though.

Two Questions:

  1. Which is the best way to do this? With an actual button in the slider movie? Or with a movie (text) in the slider moive? Why?
  2. How can I get the tweening to play when the mouse rolls over the text movie?

Thanks.

Can anyone help me wih this?