rollover&out button

First, create a new flash file with whatever you want. Make sure there is a blank scene before the stuff you want secured.

Make 2 layers. Name the top one Submit, and the bottom one anything you want, I'll refer to it as Layer1 though. In the submit layer, make your button, just like any button, and perhaps with the word 'Submit' in it. Place the button a bit up from the bottom and slightly left of the center of the movie.