"You must supply a password to make this connection" Windows 98 to Macbook

I have a home network using a wireless router (Linksys Moder BEFW 1154). The network consists of 2 Windows XP Pro, 2 Windows 98 SE, and recently added Macbook.

My problem: When attempting to access Macbook from either of
the Windows 98 SE computers, I get an “enter network password" window stating "You must supply a password to make this connection". There is no password, user combo that works. Seems to be a well known problem. I've looked through the MSknowledge base and Googled the problem. It seems that those experiencing the problem were dealing with Windows 2000 or were having trouble getting into and XP machine and there appears to be very limited success involving various workarounds. Nothing involving Macbooks

I have no problem with any of the Windows machines communicating with each other. The Mac accesses all my
Windows computers with no problem. I get the password request only when trying go to the MAC from the Windows 98 SEs.

I'd appreciate any suggestions as to what might the Windows 98 SE computers need or be looking for from the MAC that is causing the problem.

TIA

Macbook Mac OS X (10.4.8)

Macbook Mac OS X (10.4.8)

Macbook Mac OS X (10.4.8)