If loaded, next time just play from frame blah?

I have a flash movie, inc the preloader etc… However each time I go back to the home, it starts from the beginning, i.e preloader etc…

Is there a way in which if seen once, play from a particular frame next time???

I would think a session variable in the asp script, but what would I need in the flash swf file for this to work, a demonstration would be sound.