Below is the code I have in my main movie, which loads the base splash movie on level 2.
loadMovieNum("cc_cover.swf", 10);
loadMovieNum("popupmenu.swf", 8);
loadMovieNum("resources.swf", 11);
loadMovieNum("help.swf", 35);
loadMovieNum("../section_1/01_top01_pg01_splash.swf", 2);
stop()...