mate,
Win98 is a bit dodgy with this. I think the thing you need to do is go to START then select RUN and type in there WINIPCFG, you might have to release all IP info and then renew it, as I think this is where the problem is, if you would do an ipconfig on the 98 machine you would find out that it has an ip in the range 192.168.2.***.
so try WINIPCFG first and see what happens
oops and I've been rude... .WELCOME TO THE BEST FORUM FOR TECH RELATED STUFF