I made Bible Answer Game for my Church Family Night using Flash Pro CS5: Contain 25 buttons on menu.

I desparately need help with a needed function.  I have 25 numbered buttons, each leading to a question and question page leads to answer page, then back to the main menu for contestants to choose another numbered button; simple right!  I'm a pastor and a graphic artist, who is  less than a nubie with AS3. I need help making the buttons disappear from the main menu once they have been selected. When the last button have been selected during the game. I want to be able to reset the visibility of all of the buttons in order to replay the (movie) game again from the start. Any help would be most appreciated. I will gladly upload my file that you may examine the code.  Thank you.