windows 98 workstation won’t connect to

I’m setting up my first Windows 2000 server. This server is not connected to the internet. I setup the server as the domain controller and the DNS and Active directory seem to be working fine. I’m setting up a Windows 98 workstation to use DHCP. It won’t connect to the windows 2000 domain but does get its IP from the windows 2000 server. I can run IPCONFIG /all and everything looks fine (as far as DNS stuff, ect.) the only thing it won’t do is log into the Windows 2000 domain (Logging in as administrator and ensure the domain name is correct). Any clues