Ok..

I managed to create a modellist, and read it out of the wrs file.
(have written a BINDing Tool to create the wdl for me )
Small Question:
Is there a way to create a WRS Creator?
Something like:

The User creates own mdl files in a specific Folder System, starts the exe, and the exe creates the modellist, names it into something.pak, Creates the binding WDL and compiles it into a <filename.wrs>?
That would help us to create a custom packer for creative users, or individual content packs for levels.

If that´s not possible, we create Plan B (Content system like in Counter Strike).