I have a problem with Windows 2000 Server and a small network. Quick background: Server Windows 2000, three desktops with XP Pro and two Desktops with 98SE.
All machines authenticate on the domain controller fine, the XP PRO machines see all PC's and shared resources, however the 98SE machines see the XP PRO over the NETWORK but cannot access the shared folders or printers.
I figured it was a problem link to the authentication through the server, because generally on small networks with servers I have not had any problems sharing with mixed networks.
You should try installing the Active Directory Client Extensions for Windows 95/98 on the 98SE machines from the following link: http://www.microsoft.com/windows2000/server/evaluation/news/bulletins/adextension.asp. If that does not correct the issue, you should verify your SMB signing configuration, perhaps disabling it if necessary for your down-level clients to gain access to network resources.
This was first published in July 2004