Quick and simple actionscript

simple. im loading a bunch of buttons w/ sound effects on them, and i want the buttons to appear as they load, so say i have five buttons. i assume that i make five frames and on each frame, put one more button then the last (first frame has 1 buttons, 2nd frame has two buttons, etc). whats the actionscript that basically says “if frame 2 is loaded, go to frame 2 and stop” i know this junk is easy, i just havnt had the time to learn actionscript yet.