Another option is Networks powerline network kit. I got one for about 40 bucks on ebay. It works fantastic. You simply plug one unit into an electrical outlet near your primary internet source,then plug your internet source via a ethernet cable into that unit. On the other end plug the second unit into a nearby electrical outlet, the use a second ethernet cable(cables provided) to connect to your 360. The download speeds won't equal what you get on your computer, but are just fine. I have read some reports of the units not working or failing. But mine has been working great since last January.

I'm new on here (this neighborhood) and just thinking about adding a network adapter for my 360 to try xbox live. Why do I see so many used N adapters on here? Are they problematic? Or are people just buying the wrong thing? I have an N network wireless modem on my computer and thought since the computer is in the basement and my 360 isn't I should get the better adapter for range and speed (in case I want to do much more). Thanks for any response! Bill