ive previously bought a Dlink DIR-600 wireless router and a Xbox 360 Wireless N Networking Adapter so i can connect to Xbox Live without a wired connection to my xbox, i setup my Dlink and Network adapter for my xbox and i tried to test my connection and it kept stopping on connecting to the internet but it could connect to the router itself, please help!
2. Place the IP address of the XBOX in the router's DMZ.
3. Enabled UPnP (Universal Plug N Play) on your router.
Each has advantages and disadvantages. I would try either option #2 or #3 (since each is pretty easy to implement) and see if that clears up the problem. Then come back later and decide if one of the other options might be a better long term solution in terms of security, ease of use, etc.