Is there way to navigate to various buttons on a stage using only the keyboard?

I have several movies (complete with cover art) on my Flash stage. I want to convert them into buttons so that anytime a user navigates to that button and presses enter, it will take them to a new frame (where I will have information about that particular movie). I know how to do this with Mouse clicks. But, this application requires users to use arrow keys in order to navigate and not the mouse.

Suggestions?