As Gordon has already pointed out, Xnews does does not install itself to the
Registry as an optional News Client. There is a purported Registry file at
the following link that will make the necessary Registry changes to make
Xnews the default news client:
I would caution you to back up your Registry if you decide to attempt this
I would also caution you to make sure you edit the above Registry file to
denote the actual path to Xnews on your machine before running it.