Cant see one of my PC's on my network

Here is the layout.
One pc and one laptop. Pc has windows 98 and laptop has windows xp home. I
have a linksys wireless router and both computers can get on the internet
fine. The desktop pc can see the laptop but the laptop can not see the PC. I
have file sharing and everything I can think of turned on. I have disabled
firewalls (norton and XP) but i still can t see my PC desktop from the
Laptop. Thanks in advance. Please email any ideas you may have at
(E-Mail Removed)