[Flash 8] MovieClipLoader scope

Using MovieClipLoader, is it possible for the loaded swfs to access movie clips in the container swf movie?

Reasoning: In building a preloader for a previously produced flash app (originally made for CD), I was running across huge problems with some dynamically created masks (created using attachMovie and setMask). My solution (not ideal, I guess) was to move the masks and the masked objects into the preloader (“container”) movie. But still need to move them around by code located inside the swf being loaded.

relevant code from inside the preloader:

myMCL.onLoadInit = function() {
_root.attachMovie(“screenText12”, “screenText12”, 15)
_root.attachMovie(“internalMask”, “internalMask12”, 17)

and from inside the swf being loaded:

_root.screen12.onMotionFinished = function() {
screenText12InY = new Tween([COLOR=“Red”]_root.screenText12[/COLOR], “_y”,mx.transitions.easing.Regular.easeOut, 463, 403, .5, true);

The red is where I’m not sure of how to get in contact with the movie clip in the preloader.

Thanks for any help on this.