in my house I have a small network of three windows computers to share files and internet. two of the computers, computers a and b, are on the same floor and are connected via a switch. the third one, computer c, is on another floor and so it was easiest to network it with the host computer, computer a, by using a network card that connects via the phone line. So a is connected to b and c is connected to a, but is there anyway to connect b to c via a? any help would be apreciated.