New Herzog Zwei Maps

I have this great idea for making a hack of Herzog Zwei. Who's up for it.

Check out the program. It seems the maps should be stored together. How difficult would it be to isolate and replace these maps with new ones?

Just imagine -- an alternate version of Herzog with new maps!
Its a relatively small program. Perhaps the graphics for the maps are not broken up (seperated or scattered throughout the program).

Who thinks they have the skills to find and/or replace them?