Starting a new movie at the end of a movie

There’s probably an easy answer to this question but here’s what I am trying to do-

I have a “base” movie with some main info, when you open the site another movie will start playinginside the “base” movie, at the end of this first movie I awant an a new movie to start playing, any suggestions?

They way I have been trying to get it to work is I want to use a variable to decide which movie plays ie

if (_root.Movie == 1) {
this.Movie_Load.loadMovie(“Main_1.swf”);
}

if (_root.Movie == 2) {
this.Movie_Load.loadMovie(“Main_2.swf”);
}

any help would be much appreciated.

Thanks