Is there a way to set up a LAN through my internet service? Like running it through my PC with a program? Me and a couple of friends would like to play Left 4 Dead 2 with mods. Our consoles are all non-JTAG. Thanks in advance.
Just get a router with multiple ports, and run a length of Ethernet cable from each of the ports to the back of the required Xbox. You don't even need to have it connected to your modem, but if you want to play on LIVE, you need to have your modem connected to the correct port on the router.