[misangeles]

We've been having some networking problems for a while, and I'm finally throwing in the towel and asking for help.

Three computers are hooked up to a router, which is in turn connected to the cable modem. We can all get on the internet just fine, but when we view the network, Computer 1 and Computer 2 can't see or ping each other, but they can both see and ping Computer 3.

Printer sharing is done through Computer 2, though, and Computer 1 can print just fine.

In the Network and Sharing Center screen, network discovery, file sharing, public folder sharing, and media sharing are on. The drives that we want to share are set to "Sharing" with Properties --> Sharing --> Advanced Sharing --> Share This Folder.

Sharing used to work perfectly on XP, but it has gradually reduced as we upgraded to Vista (from full drives to only the Public folders), and now we can't even see some computers!

Thanks for reading this! Please let me know what additional information you need to get us going.

[misangeles]

Is there anyone here who can help?

I'm waiting on "Home Networking Do-It-Yourself For Dummies" to hopefully address our problems, but that doesn't come out until May of this year. I don't want an older edition (2008) of the series because our home network worked just fine in 2008/on XP.

[Albert Lionheart]

Make sure that all the machines belong to the same workgroup.
If you cannot ping the other machines then this is usually a hardware failure but then you can all access the internet you say?
Are all the machines networked by cable or wireless?
Have you turned off the firewall in all the PCs?