button that responds to keypress?

[leopardi]

i'm having a great deal of trouble with what seemingly should be a simple action - i need my button to respond to a keypress.
my problem is that i don't want to apply any other actions. all i require is that the button responds to a key in exactly the same manner as it does with the mouse click. i don't want an action that makes the movie 'go to and play' with a keypress - just a keypress that makes the button play its mousedown state.
please help !! i can't seem to find any answers !! (maybe my problem is just too simple for people to write tutorials about).

[pellepiano]

Dont think its possible with a button since its behaviour is not targetable.
I would make a movieclip instead with animation on its timeline and a invisible button inside it to navigate thru the different " states" of the movieclip.
But then of course you need some goto actions ( but they can be triggered by key events).