[AS3] Frames and Classes

Hello everyone. I have a bit of a problem here… I’m creating a Box2D game, so I’m using Document Classes, but I just added a second frame in the main timeline, but I have no idea how to stop that frame from playing? “stop();” in the frame code doesn’t work. How can I make a menu with a Play button on the first frame and on the second frame is my game? This is probably a really stupid and simple question, but I just can’t figure it out :S

Thanks in advance.