Running video at start

Hello all, first post so please be gentle with me.
And apologies if this is the wrong place to ask.
i am very new to flash as you will find out, I have a very basic quiz using flash cs5
on my first frame I am trying to run a couple of small videos that I want to run until the start button is pressed, which will go to my first question.
I have not used any layers for the question and answers they just follow on.
having no joy at all doing this, searched YouTube etc but can’t find any tutorials to help me
Any pointers as to where to start would be appreciated
thanks

acehole