Question : "The network path was not found."

I have a Windows XP computer and a Windows 2000 computer networked peer-to-peer through a router connected to a cable modem.  Internet access and resource sharing is working fine.  I've added a new Dell system with Windows XP Home Edition, and I've run the Network Setup Wizard using a Network Setup disk created with my other XP computer.  The computers all "see" each other, however when I try to access the Dell from either of the other two, or when trying to access either of the other two from the Dell, I get the following error message:

"\\Computer is not accessible.  You might not have permission to use this network resource.  The network path was not found."

What am I missing?

Answer : "The network path was not found."

check this 2
 cannot access shared files and folders or browse computers in the workgroup (http://support.microsoft.com/?id=318030)

A general HOW TO guide can be found here:  http://computer.howstuffworks.com/home-network.htm

XP Home networking guides:
  http://support.microsoft.com/?kbid=813936
  http://www.wmwoods.edu/ULIS/helpdesk/xpinstruct.htm
  http://support.microsoft.com/?kbid=308007

Adding XP to an existing network:  http://www.practicallynetworked.com/sharing/xp/addxp.htm