Actualy, World Edit (Not Edit World!!!)can make some very good Campaign Maps. You can get it off of File Planet. it can't create scripts for you however, It is a complex process to add more levels to the game,
but it is not impossable to do as I have done so many times with the original source code release, It is quite easy once you get the hang of it. I can't help with .wz format as I only learned how to work on the original source code release version scripts by
lots of trial-and-error, but if you try hard enough and keep looking at the oringinal script files you will eventualy learn how to make a new campaign level.

For example on the original code release you need to add the level file locations to GameDesc.lev or the game won't find it! It would be best to start by editing the levels allready in the game, then adding new levels as you go up in scripting skills. And finaly I think that a file called ScriptLang.rtf woulld be of some use for you, I don;t know how to get this however. I beleve it came with the 1.10 patch.
