I have 5 windows 2K servers at home connected via a HUB, One of them is PDC. The PDC able to ping all computers, but none of others able to ping PDC, therefore they are not abl e to joined to the domain. But they all able to ping each other, except to the PDC server. No firewall, they are in same subnet of 192.168.0.X 255.255.255.0. Any suggestions?