PC cannot see Domain

I have Netware servers and a WIN2000 server setup with Active Directory and is the domain controller. One, and only one, PC cannot find the domain. If I try to setup the domain through My Computer, Network Identification,Network ID, I get an errorthat the domain name does not exist. If I browse through Network Neighborhood, I can see the icon with the name of the domain but cannot see anything below that. Oddly enough, if I use Explorer I can map a drive letter the the //domain/sys. The offending pC is a WIN2000 PC. No other computer has this problem. IP setup is correct and served through a Netware DHCP server. IPCONFIG looks good.

Any ideas?