AS3 addChild HELP!

I’m trying to figure out how to use addChild to place a movie clip. I’ve got it working, but I can’t get it to load in the bottom level of the movie. No matter what I do, it seems to load on top of everything else. I’m definately a newbie with AS3, and had only a little experience with AS2, but the load / unload movie seemed so much easier than this. Can anyone give me some detailed help ? I’ve found tutorials on addChild, but none of them specify how to load into a specific layer/level.

Here’s what I’ve been using…

var contact:BGcontactMCin = new BGcontactMCin();
addChild(contact);
contact.x=495;
contact.y=350;

Thanks.