you should have these folders: _generals_and_captains, _units, attachmentsets, equipment_library, mounts, shields_library, weapon_testing & weapons_library...

... other than those folders, there is only one icon in the data/unit_models folder - that one other icon should say: battle_models.modeldb... if you haven't opened it with notepad before it will likely show the default windows icon, which might be what's throwing you off