Force Screen Size

Hi guys!

I have this interface file with the play buttons and stuff something like a video player and a screen which external .swf files will be loaded into this screen when i click the play button.

My question is…
Is there anyway to set the screen size to a specific resolution like 800 X 600 so that even when a 1400 X 800 or a 600 X 400(no matter a bigger or smaller resolution) resolution .swf is loaded into this screen it will be automatically be forced into a 800 X 600 resolution?

Thanks in advance