Button w/ dynamic text

Alright I’m doing a project on the Bill of Rights, and I need some help with Flash MX. I want it to be able so that when I click a coin on the Flash a little scrollbar text thing, I think is called dynamic text will open up above the button and display the text about that freedom/amendment. So far I have my coins tweened to the positions I want them so all I need is to be able to click them and they open the text box thing to show whatever I had typed in there. So any help in creating this would be greatly appreciated!!!

Thanx alot
Josh Carr