Newbie - buttons are not fun anymore

I confess that I have been avoiding AS3 like the paige, but I have been forced to learn it. Making timers, manging timelines… so far so good. But a button? I simply want my movieclip/button to change state and link to a URL. In AS2 this was easy.

on(RollOver){
//do what i want
}

on(RollOut){
//do what i want
}

on(Release){
//do what i want
}

HELP!!!