LAN game but no internet

[bfdm_mexi]

Ya I read that. But its REALLY vague. Do I modify the server.bat file? Do I create a new server using the server wizard and if so how? I'm pretty saavy on computers. But I can't find anywhere to put my IP address in so the other computers in the network can connect.

Just thought I would mention: http://assault.cubers.net/docs/commandline.html
Which states:
" In the AssaultCube folder, there is a file named "assaultcube.bat". Right click this and open it with "notepad" to edit the clients launcher. Also, after using the server wizard, in this folder will be "server_autoconfigured.bat". Right click this and open it with "notepad" to edit the servers launcher."

Ya that's makes sense NOW. But there is no reference to -mlocalhost anywhere there. Just saying edit it doesn't really help the beginner. In any case I'm up and running now. Thanks for the help everyone.