It looks like you'll need to install DSCLIENT on the '98 client to pull this off, as well as a few other requirements below. The server will need to be running WINS.
MSKB555038 - pasting in the most germane bits, in case MS decides to rewire their KBs again at some point.
Install Internet Explorer 6 with Service Pack 1 or higher.
Install DSCLIENT utility from Windows 2000 Server installation disk or from
Note: Please review the knowlagebase: "Directory Services Client Update for Windows 98" 323455:
Enable NTLM 2 Authentication (please see "More Information" section for details).
Enable SMB Signing (please see "More Information" section for details).
Configure the workstation to use local WINS server.
Consider installing the hotfixes that descrive in:
Service Packs and Hotfixes That Are Available to Resolve Account Lockout Issues
Configure the local DNS domain as DNS under TCP/IP properties.
Note: If you are using Windows 95, please follow the knowlagebase bellow:
Note: If the logon problem is'nt resolved, please review the following knowlagebase:
Problems logging on to a Windows 2000-based server or a Windows 2003-based server
Configure each server in the domain to use local WINS server.
If you are using Windows 2000 or higher DHCP server, make sure that the DHCP can register old clients.
Review: KB 898060
Note: Some articles recommend to disable SMB sign in the domain controller OU. Please avoid changing domain
controllers policy, and specialy dont disable SMB sign.
Note: Windows 98/ME clients have problem with computer names largers then eight characters. Please avoid
using long computer names.