I have 2 standard computers 1 with xp 1 with vista. Can i set-up a lan without a router/server for multi-player gaming. I have tried an ethernet cable from one computer to the other and the computers sensed that they where conected but when i went to set-up a multi player game i got an eror mesage saying could not conect to surver. How can i cheaply fix this? PLZ reply with an anser i don't want to have to buy a server.