How to load a movieclip into another one from library

Thanks for looking into my post. Hope you can help me.

I’m trying to load a movieclip into a “movieclipholder” in the Flash project.
I don’t want any external SWF’s, everything is put together in the same
project. And that’s where my problem starts.

I have got no idea how to load one movieclip from the library into another
movieclip. Is it possible? I feel it should be. :wink: - Please guide me.

Thanks alot in advance.