Using SWC for themeing flash cs4

Anybody got any links to some god tuorials that will enlighten me on how to prepare a swc with my movieclips so i can access in my flash main doc class. The idea is to have the fla that holds the themes compile to a swc and once I open the main fla i can compile the new swf and it sucks in the swc file changes.

Thanks Inadvance for your help!!!