Help - Transition btn 2 swf files

I followed the tutorial titled “Transitions between 2 external swf files” http://www.kirupa.com/developer/mx2004/transitions2.htm and have come across a problem. My links are in a seperate MC on the main stage and can’t figure out how to rewrite the AS to begin the transition (continue playing MC before loading new one). Also, my transition is in a seperate MC on the main stage. I have it this way so the link MC and the transition MC dont have to load everytime a new MC is loaded.
Some one please HELP!
Thanks