Recognizing a loaded movieclip

What I’m trying to do is load a movieclip into another movieclip. I have a preloader set up that analyzes the load (the movieclip being loaded into) movieclips content and then displays the appropriate number. What I can’t figure out is a way to hide this preloader once the load movieclip is completely loaded. I have used “===” in the past to compare total vs. bytes loaded, but this method seems to be hit and miss. Any hints?

Thanks in advance!

-Brock