Windows 2003 Server And SQL 2000

We have installed the SQL 2000 Server on a Windows 2003 Server for our platform update.

Unfortunately our Windows 98 workstation and Windows 95, are unable to connect with the SQL 2000 server running on a Windows 2003 Server. While Windows XP workstation and later version dont have these problems.

Obsolete may it seems but it would cost us a lot if we are to upgrade all our workstation into XP and later version of Windows OS

Our previous Server run on a NT4 platform.

Is there any patch or upgrade or service pack that would resolve my SQL Connection problem?

Thanks in advance..