Networking from 98 to XP over wireless router

Hello,

I have one XP machine set up on a wireless router running
to a cable modem. I have one 98 machine that is also
connected to the router. No internet problems. The
printer is even sharing. I can pull files through the XP
machine from the 98 machine. I can't get the 98 machine
to find the shared files on the XP machine. whenever I
click the network on the 98 machine is says run
troubleshooter. Nothing helpful there. the group is the
same etc. I'm sure it is an easy fix...what do I need to
do? Please let me know!

Thanks!