addressing a MC on the root...

hello,

in my root .swf i have the following code:
var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
var logoLoad:MovieClip = mc.createEmptyMovieClip("logoLoad", mc.getNextHighestDepth());
logoLoad.loadMovie("logospin03.swf");

then in a separate .swf (loaded in the same way onto the root movie into mc2), I have a button, which when pressed should send "logospin03.swf" to frame 2, but I cant figure out how to do this.
This is my attempt:
coll_mc.onRelease = function() {
_root.mc.gotoAndPlay(2);
}

But it doesnt work, nor do any other combinations that I try.
Any help greatly appreciated!
thanks