Originally Posted by xtremezx2
You don't need a crossover cable. I've done it quite a few times without one. You are sharing the wireless connection and allowing incoming data to pass through to the router. Try turning off your firewall and see if that helps.
....That doesn't even make sense... One-way internet connection? Negative, Nightrider. All internet connections need to transmit AND recieve.
Allowing incoming data to pass through TO the router? So where is the incoming data coming from? The TV? Or is the internet magically floating in the air? I don't think he's trying to play xbox live at a starbucks WiFi hotspot.
Or, how about this: The internet is being provided to his household by his ISP, coming over COPPER to his house which ends up at a jack, whether it be a coaxial cable jack or over a phone line if it's DSL. So, like I said, it plugs into the his modem via coaxial or a RJ11 connection on a phone line. From the modem, it probably is connected via cat5e ethernet into a wireless router, which is then transmitting AND receiving data, or packets, throughout the household, for other wireless devices to pick-up, and transmit back AND forth in order to communicate.
SO. His laptop probably has a wireless card, picking up the internet, coming from the router, coming from the modem, coming from the ISP. Plugged into his laptop is his xbox, which, coincidentally, in order to communicate with the interwebs, needs to transmit AND receive. Hence the importance of a crossover cable. Hope I made this simple enough for you.