DNS error can’t display page

I have a Win98 PC running IE6 & ICS. I can
connect to the internet and am able to view
web pages via my client Mac, but the server
(Win98 PC) is unable to display web pages
and I get the ‘The page cannot be displayed’
message. I have unsucessfully tried to view
pages by using IP addresses. I can ping the
IP adresses, but not the FQDN. I aslo have
more than one copy of wsock32.dll, one in
\windows\system and one in \windows and
I’m unable to rename the second one. This is
incredibly frustrating please can some one
help. Thanks