Open up the TCPMan program.
Pull down the File menu and choose Setup. This will bring up the TCPMAN configuration screen. Make changes to the IP Address, Name Server, and Domain Suffix so that it matches the picture below. The IP address should be 1.1.1.1, the Name Server should be 199.184.119.1, and the Domain Suffix should be inetnebr.com.

Press OK, and then choose Exit from the File menu. Choose Yes when it asks if you'd like to save changes.
You should now be ready to go!
manager@inetnebr.com