What I was doing was copying the contents of the files as viewed in DuneEx (they are read only from there, but they can be added and removed) into a blank Notepad document, modifying them and saving the new document. I then used DuneEx to remove the old Rules.txt file from the model0001.txt and put the modified document in its place under the same name. It was working fine for an evening or so, then just stopped. It now uses the original unedited versions of the files, even though they have been replaced and are no longer in the directory (Yes, I did check they have been replaced. The files now in the directory have the changes in them but somehow Emperor is using the old ones). Oh and by the way the .ini extention is used by CnC Generals. It doen't need extracting or anything, when you make changes to it you can just save it and you're done.