I have a network of 8 machines. All are new Dells. All are running Windows XP Home. One machine on the network (the last one I installed and the newest) is unable to access or be accessed by the other machines on the network. As far as I can tell, all are running the same software with the same settings. All machines are connected to the same router. All machines (including the one I'm having a problem with) access the Internet just fine. The problem network "sees" the Workgroup, but when I click on the Workgroup name, it gives me the message "[workgroup] is not accessible. You might not have permission to use this network resource. Contact the Administrator of this server to find out if you have access permissions. The list of servers for this workgroup is not available."
If I try to access this problem machine from another, I get the message "\\[machine name] is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. The network path is not found."
All users on all machines are at the Computer Administrator level.
All machines are running Norton Internet Security. All machines have the network as a "Trusted network". Turning the firewall on and off makes no difference to this problem.
Any help is most appreciated - this is driving me nuts!