HelpHow to replace/fix FSOD dungeons?

So, im quite new to this and i've been looking around for a couple of hours and i dont get how im suppose to fix the already made shatters and other dungeons that i have because it has no enemies, and doesn't go past the first boss room and i've looked at behaviors and all that but i still don't understand how im suppose to fix it and other dungeons like Tombs. (Sorry for wasting your time, guess everyone starts somewhere lol)

First, make the XML's for the enemies, entities, objects, then, add the XML's to your client with an SWF decompiler. After that, use your clients map editor to fix the map, placing your entities where you need them. You can then go into the behaviors, and start telling your entities how to behave.