We have a NT 4.0 server with two nic cards in it.One is ethernet and the other one is tokenring for transfering files from a tokenring network to a ethernet network. The tokenring nic has been inactive for a couple of weeks.So we loaded drivers for the tokenring nic and made it active and everthing was great.When we rebooted the NT workstations (only have 2 of them) it let us log in but gave this message (No windows NT Domain Controller is available for the domain. The event viewer says the NT workstation is trying to be the master browser.The NT workstations was connecting fine until we added the nic driver and rebooted the server and workstation.Where did we go wrong. Thanks