Help Combining two Tutorials - External SWFs with Rollover Buttons

So I’m using this tutorial with loading external swfs:

However, I’d like to use these rollover/rollout buttons:

Basically, the first tutorial explains how to load external swfs assuming that your buttons are all on the main timeline (and never uses on (release), etc). However, the rollover/rollout buttons tutorial doesn’t even use buttons, but instead uses movieclips.

How would I be able to target the container movieclip using the movieclips from the rollover/rollout buttons tutorial? It’s kinda’ tricky so I’m hopin someone can help.