want to put video into flash

I can't imagine this being too difficult...I want it to be loaded externally ofcourse. But kind of like you tube...the videos are in flash...What I want to be able to do is on my main SWF file there is a button and when you click that button, I want a movie to load from outside the swf (externally) that loads into a movie clip that is on my main timeline...:) I tried to look for this script somehwere but no luck...

If you look up 'preloading flv files' in the Flash help section, there is an easy step by step on how to preload external flv files. Then all you would do is add the provided script to a button so that it does it when the button has been pressed. Hope this helps get you started.