can you ping each other by ip? if yes, can you ping it by name? thi step by step troubleshooting may help,
http://www.howtonetworking.com/Troubleshooting/notaccessibale0.htm
Don't send e-mail or reply to me except you need consulting services. Posting on MS newsgroup will benefit all readers and you may get more help.
Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, Remote Access on
http://www.HowToNetworking.com
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
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Cannot setup network using NETGAER router. Followed all procedures an both
computers, sharing, etc... can see network on each computer seperately but
cannot add the other computer to the network. WHY?