ActionScript 3.0 :: Making Movie Play Or Pause By Clicking Button

I'm making a project, So I've got several questions..
-How do I make the Movie play or pause by the click of a keyboard or a mouse button?
-How do I Open another SWF within the SWF (loadMovieNum doesn't work anymore )
And last question is How do I move the "video app" I actionscript'd and make it larger . Here's the code I used to put the "video app".

Code:
var camera:Camera = Camera.getCamera();
camera.setMode(550,400,60,true);
// setMode(videoWidth, videoHeight, video fps, favor area)
// Now attach the webcam stream to a video object.
var video:Video = new Video();
video.attachCamera(camera);
addChild(video);