This was created by Schwarz... I just use this instead of adding it to my reg tweak .cab file.
The registry entries that need to be changed are documented around on the forum but I can't recall them off the top of my head. After applying this tweak, you do not need to change any settings in Connection Sharing.
Edit: Oh haha... the cabified version is there in the essentials thread
Just use the .cab, it's easier. I guess I didn't need to attach this.