Have you created the same workgroup for all computers? This search result may help,

Vista troubleshootingTroubleshooting Vista Remote Access Issues ... Networking between Vista and other Windows OS ... Info: Step by step troubleshooting VISTA sharing ...
http://www.chicagotech.net/vista/vista.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
"Carlos Godinho" <Carlos Godinho@discussions.microsoft.com> wrote in message news17AB769-D449-4BAB-9637-410650797C3B@microsoft.com...
I there ...
Well I bought a new computer , an HP notebook with windows vista home
premium installed.
I have two more computers, with win 2000 pro installed.
With a router wireless I connect the two win 2000 pro via RJ45, when I go to
network place I saw both win 2000 pro computers.
The problem is the new one, the mobile, that is conected via wireless.
Well I can not see the mobile in the network computers that have windows pro.
And in the mobile I can not see the two that have win2000 pro, but I have
conection to internet in all three.
The questions is:
How can a put windows vista to comunicate with the two others ????, sharing
folders betwwen all ????
Thank's ...

Best regards
Carlos Godinho