Mapping a network drive to a Windows 98SE

I just installed my wireless home network and can get to the internet from
both my Vista computer and the 98 computer. The Vista computer sees the 98
copmuter in its Network area, but when I try to map a drive to the 98
computer, it tells me it cannot access it, the network path is not found
(0x80070035). And yes, I have turned on sharing and made several folders
available for sharing on the 98 box. Thanks for any help.