Simple question

Well, it’s probably simple for most of you. I put most of my actionscript on frame 1 of scene 1. I know that if I have a movie clip that is 10 frames long and on frame 10 a button appears in the movieclip, my actionscript on the main timeline controlling that button won’t work.

So, my work around is to turn the alpha to 0% for that button during frames 1-9. My question is, is there a better method for controlling buttons that appear later?

I’m new to the whole flash thing. I apologize for my lack of technical flash vernacular. Any help would be greatly apprecaited.