Navigation animation help needed

I’ve drawn a couple of small trees that I want to serve as navigation/buttons, and the idea is to have leaves flying off them and to have the corresponding menu text hover above them when the mouse rolls over.
I’ve just recently began working with flash, so I don’t know what kind of tutorials I should be looking for. My guess is that it has something to do with triggering a movieclip when I rollover the individual trees…?!?
I hope you can help me out by pointing me in the right direction :slight_smile: