We have client who networked their workstations XP, w/SP2, in a peer-to-peer setting, construction trailer, desktop units, no laptops. When they use the network cables they can access files on the "server" ok. When they switch to wireless cards in the workstations, they get connectivity issues with savings files on the "server". They can still access the Internet ok. I added the maching name and IP address on the hosts file on the workstation, which seem to resolve the issue, but the problem re-appeared. The wireless is all Linksys.