Windows 2000 Network Sharing Problem

I have 2 computers one running Windows2000 Pro and one on Win98. I set up a Linksys 4 port router to share my cable modem. Both computers can access the internet, and my win 98 computer can see shared files and a networked printer on my Win2k machine.
I can't seem to get the Win2k machine to see the shared files on the Win98 system. I can see the name of the Win98 machine in network Neighborhood, but when I click on it I get an error reading "Network Path not found".

 

What kind of sharing are you using on the Win98 PC....user level or share level? Are you using the Win2k PC to validate your logins.