You want to make a new wog update? Because that's the instructions... I have just finished an update for my mod myself (previous post) and so If you want download it and extract it on any folder so that you can see how it is structured. The wog file is actually a rar file, you can unrar it too...
I am putting together an all new one that has drastic (and I think really great) gameplay changes. I will make a new thread of it and when I do feel free to upload that too.
It should be ready within days, two weeks tops. Stay tuned.