I'm at a loss. I have a Windows network (4 PC's plus 3 Macs). My Windows PCs all see each other and the Macs and successfully connect. One of my MBP (13") sees all Windows PCs and Macs. The other MBP (17") sees all but ONE of the Windows PCs (and the one it won't connect to is the only one that is critical -- of course).
I get the error "Connection Failed: The server "name" may not exist or it is unavailable..." I have tried everything I've found on the 'net as far as troubleshooting. All the settings on the Windows PC are good (no Firewall) and, as I said, everything else on the network can connect to it. I've tried deleting all the plist files related to the Airport, nothing. I even tried directly connecting via Ethernet (that made things worse -- I couldn't connect with ANY of the computers).
I am resorting to sneakernet to copy files between these two computers and I'm losing it.