I have a copmuer with windows vista, a computer with windows xp, an xbox 360, and a Rangemax dual band wireless-n router(netgear) to connect them all. a few days ago, i wanted to conect my vista computer and my xbox, but i did something wrong, and my xbox can't find my router...i've tried it all and i need more help

Here are some ways to configure Xbox to connect to Internet , not sure whether it helps.

Hi, Thank you for posting. Since the issue occurs with the XBOX, it is recommended that you contact our XBOX support regarding this. XBOX support http://support.xbox.com/support/en/us/nxe/default.aspx Hope the issue can be resolved soon. Thanks for your understanding and cooperation.Nicholas Li - MSFT