If turn off the firewall, can you ping each other by IP? if yes, can you ping by name? Or this link may help,
Vista TCP/IP IssuesSolved: Vista computers can't ping each other ... Solved: Vista needs to renew IP whenever starting ... Info: Step by step troubleshooting VISTA sharing . ... http://www.chicagotech.net/vista/vistaipissues.htm
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"dave" <firstname.lastname@example.org> wrote in message news:879CA855-DF2F-41B2-B0A0-5820197513F2@microsoft.com...
I have a few Vista machines setup on a home network. Each machine can get to
the Internat via the wired or wireless router, but one machine I am finding I
cannot ping at all from the others. I dont know how to solve this, as it is
the machine that has some peripherals like printers I want to share.