This has been annoying me for a while…

I have a mc on the _root. Called holder into which I load an external image.swf file.
I also have a nested set of clips like so:


and so on until I have 15 of them…

I am looking to place the loaded image.swf into _root.pieces.p1.bigPic

How do I do this?
I know how to dynamically target clips for naming an duplication etc.., but don’t know how to duplicateMovieClip to a specific mc target??

Any help would be appreciated.