huh?

are you not embedding the .swf as normal?

I dont think this has anything to do with Dreamweaver?

if the .swf works by itself..

but the .swf does NOT work when loaded into another (main) .swf..

its usually a scoping issue.

remove all references of _root in the external/form.swf.. and use relative pathing.

or maybe try using _lockroot = true;