This tutorial is not by me. It is by friend and co-admin of the gameblender.org forums, OldJim. He has been working on a network game template, called WSAG. It is an up and coming Network game template, and has been mentioned on different parts of the net. BZoo is the leading template, but his is coming up.
You can download his network game template and the tutorial HERE.
Again, thanks goes to all to OldJim 😀