How would I replace the _root functions... (Zip file inside)

So I’m making this website for my school’s atheltic webpage. I’ve ran into a few snags as I have different .swfs “Layered” in a way that I so that if I click am browsing (Just using example names here) SWF 1, and I click a button, it loads SWF 2 unto CONTENT_MC 1. If I were to click a button on SWF 2, I want SWF 3 to load on CONTENT_MC 2, and so on.

I tried using the _root thing, but I have a feeling that I’m not supposed to be using it. Any help/explanation would be appreciated. =)