Question : How to change domain name of LAN

I would like to change the domain name of my LAN from abc.com to abc.net. What does this entail? I have a Windows 2003 server as my domain controller.

Answer : How to change domain name of LAN

Just to clarify...did you really want to say 192.168.1.12-192.168.11.20   or did you mean 192.168.1.12-192.168.1.20

You should be able to go to Adminstrative Tools, Routing and Remote Access,  

In the left window right click on the Server Name > Properties > Click on the IP tab

Change from Dynamic to Static and enter in the address range you want to use.