I will check the firewall first. To test it, disable the firewall, can you ping each other? Or this link may help,
Step by step troubleshooting VISTA sharing
http://www.chicagotech.net/netforums/viewforum.php?f=1
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
"Bill Smeltzer" <BillSmeltzer@discussions.microsoft.com> wrote in message news

8C62706-1725-4057-A798-5BD9B9A47238@microsoft.com...
I have my desktop running Vista connected to a Linksys router. My laptop
which runxs XP has a linksys card. I am able to connect to the internet on
the laptop wirelessly but I am not networked as the computers do not
recognize the other is there. I have downloaded the update suggested on this
site. Pinging produces no resluts. If I try to install the network using
Microsoft installer, I am told another program is controlling this. It
appears my only answer may be getting a technician from The Geek Squad ? Any
help would be appreciated.