I have a home network with a Laptop running Vista Home Premium and a Desktop running XP SP2. The network was up and running using a router just fine but wasn't without its problems. Anyway, I just upgraded the router to wireless and now, the computers can't "see" each other. Both can connect to the internet and they can use the network printers but no file sharing. I can't ping either one, either. Any ideas? Thanks for your help!