I have an NT 4.0 network that is divided into 2 subnets accross a pair of routers and T1 lines. I just installed a stand alone Win2K server that is not part of the domain, but uses the same DNS and WINS servers and has the workgroup name the same asthe domain name. I did NOT enable file and print sharing (although I probably should have). When I disconnect the new server, computers on either side can see all other computers/servers. When I connect the new Win2K server, then each group can onlysee computers on their side of the router. I have TCPIP enabled and Netbeui enabled, although I may be able to get rid of it.