Loading an External .swf into a level? HELP PLEASE!

Ok I want to load a external .swf into a empty movieclip on the main movie called ‘transitions’ …

But I also want it to load into level 1 …

Here is the code I have so far…the movie loads but I don’t know how to tell it to load into the ‘transitions’ movieclip I have placed on the main movie…??

//initialise a variable
nextMovie="test_splash.swf";
//load the starting movie into level 1
loadMovieNum(nextMovie,1);

Any help is greatly appreciated!! Thanks!

Boon