I've got a movie (parent) that loads several other SWFs (children). I need for
the parent SWF to attach movie's to the child SWFs from it's library - but i
can't get it to work.

Is there a way to do this?

If the children are loaded into empty clips, they can be addressed via the
instance name of the empty MC, and you can use
holderMC.attachMovie("linkageID","newName",depth);
to attach the symbol with "linkageID" to the MC loaded into the instance
"holderMC".

hth,
blemmo