Animating a button

Hello. This sounds (to me) so easy that i cant really belive im asking it , anyway here goes.
I have a button already on the stage that when you (release) it, several things take place.
I would like the button itself, when it is (release)d , to move to the right a little bit. So therefore, i want to animate it.
How do i convert it to a movie ? do i need to ?
when i ihave tried to convert to a movie, i cant seem to make it (stop), so on the .swf it just starts running through its different buttons states (flashing and doing all kinds of wickedness)

yes i did a search for this here and to no avail.

help please ! thanks !