Load contents into a host_mc from a randomly chosen folder in the library


I am currently building a hi- lo game in flash.

I need a way to randomly attach the contents of 1 folder of 7 in the library into a host_mc which is positioned off-stage.

Each folder contans 10 movieClips with linkage identifiers. Getting the contents of one folder into the host_mc is not a problem. The problem lies in getting the system to randomly select a folder.

The system also has to be able to keep track of which items have been loaded in.

Is this possible or should I look into another way of doing it.