External file control

Hi.

I got this problem. I have an intro for a site stored in an external .swf. I ask the user whether he wants to see it than i call it with loadMovie. I dont have a preloader yet but i dont think that´ll be a problem. What i need is to have the loaded movie wait for a fade effect to pass befor it plays. Its like this: the first frame of the movie is drawn on screen, then the question pops up, then i load the movie with the preloader, then i want a fade between the wireframe thats drawn onscreen and the first frame of the movie i load into a different movie clip (cos i dont know how to do it better) and after the fade is done i want to start the intro. Intro has been made using cinema 4d and translated to swf with flix so i cant put code in it. I wanted to use play(); and stop(); but it doesn´t work. Im new to this as im sure you´ve guessed by now.

And another thing.

Since I cant put any code into this external file, how can i now when the movie is finished so i can take the user to the main section, makin sure he´s seen the whole thing. Guess I could do it with a click on the mouse, but i´d like it to happen by itself in case someone doesn´t feel like clickin.