Layers problemo´s!

hi peeps!
i am having some difficulty with layers, and making my site work.
the thing is that i have a base mc, in that mc i got a target area (contents) and i load external swf´s in there. my problem is that when i click to load the next .swf, the target area and the contents do like a little flicker and reveal what is underneath the target area (which is another problem, i want whats underneath not to show!!!)
how can i do this? i am using mx 2004, if some1 has the time i can email my fla.


I can help post the file :thumb: