[Swftools-common] Inserting an image into existant MC

[LivingDocs]

Hello,

I want to insert an jpg-image into a MC of an existant SWF.

In my library-SWF i have an MC "dummy_ani" that moves another MC  
"bild_dummy" over the stage.
As result the jpg should be moved over the stage.

I think it must work like this:

- create a new SWF.
- insert the library-swf as a background.
- replace the MC "bild_dummy" in the library-swf with the jpg.



Can anybody tell me, how this has to be in the sc-file?

Benedikt