file sharing

I have two pc’s running windows 98 sharing a broadband connection thru a router. I have enabled file sharing on both computers, but when I go to map a network drive in explorer it tells me it can’t find the other computer (yes, both are turned on). I specified the path of \\computer-name\drive-name but still no luck. Any ideas on what I’m missing would be appreciated.

Thank you,
Martin J. Morovitz