I'm setting up a client's network. He bought 3 brand new Dell 2400's w/ WinXP Pro. The server is a new Dell PowerEdge 600 with Win2003 Server. Two of the workstations joined the domain just fine. The third says it ca't find the domain controller. However the third system is getting its DHCP addresses (and internet connectivity) just fine. I can also ping the server with no problems. Any ideas?