This one is driving me insane!!! I have 2 PCs and two laptops set up on a home network. Two laptops and one PC XP SP2, and one PC is running VISTA. I can see all computers but the one PC with XP (Even the VISTA machine is fine!). On the PC that is causing problem, I can Ping the other computers, but can't see anything on the network, nor can the other computers see this one. It has a unique name, and the firewall is turned off (for testing). I am not sure if this is causing a problem, but when I look under properties under "Local Area Connection", the "Client for Microsoft Networks", and "File and Print Sharing" are there, but not checked. I have tried to check them, but when I do, it says that it will disable them. Any suggestions?