Best Solution (Preload Multiple SWF)

I have a main.swf which has a MC,** container**. Container is used to load in several other SWF on top of main.swf (Main shell for site) when buttons are pressed.

I want to preload all the SWF files together with one preloader, 4 in total. Then when a button is pressed, the SWF instantly appears. [COLOR=Navy]loadMovieNum[/COLOR] I’m guessing won’t work for me as I’m loading the SWFs into MCs, not levels. Setting the alpha to zero would work for one but not all? Four MCs, container1, container2 etc… Load the SWFs in, set opacity to zero and set to full when a button is clicked?

What’s the best solution?

Thanks