Movie Clip Ready2Go Question

Hello all

Having trouble deciding the best way to load a Movie Clip.

Basically I have my MAIN PG which has a button that loads a EXTERNAL SWF. Within my EXTERNAL SWF is a MOVIE CLIP that I want to load when a BUTTON is clicked. But there can be no delay or preloading involved. The Movie Clip must be already to go.

Just wondering what my best method would be. My first time uploading flash onto the web

See attached example