Resizing flash movie to different size broswers

Hi guys.

okay I’m using Flash CS4 and dreamweaver CS4 and AS2.

Because i design on a new mac book pro, my resolutions is very high and the flash movie fits perfect in my screen, just the way i want it to sit in every computer.

But on a computer with a lower resolution, i now that that my web site would be much larger and not fit right.

So how can i make it so the movie adjusts to different resolutions and sits just perfect??

Any help or links to other post would be GREAT!!

Thanks

Kym