Cannot see Access 2000 workgroup file on Windows 98 workstation

We are running a multiuser access database converted a couple years ago from
Access 97 to Access 2000. Most of our employees use Windows XP workstations.
One uses an older Windows 98 workstation.

I cannot see the workgroup file on this workstation in the network folder
when I login. All network drives get mapped. I can see the workgroup and
join it on other workstations. We never had this problem before when we used
Windows 98 stations to access the Access 2000 database. All other files in
the folder can be seen.

Any ideas as to what is happening and how to fix this?