From the Xbox 360 Dashboard, select My Xbox,scroll over to System Settings and press A to continue.
Once in System Settings, select Network Settings and press A.
The Network will display an icon to use a wired network and will show icons for all available wireless networks. Select the network that matches the SSID you noted earlier.
If your SSID isn't displayed, press X on the controller to scan again and look for your SSID.
If you still can't find your SSID, try restarting your router or your Xbox 360.
The location of your Xbox 360 can affect wireless connectivity. Try moving the Xbox closer to your router to verify your network's wireless signal strength.
If you are already connected to a wireless network, the wireless network icon will have a in the upper right-hand corner. If you're having problems with this connection, select Y and continue following the steps below.
Once you find the correct SSID, press A to connect. The Xbox will prompt you to enter your network security key (WEP, WPA, or WPA2 encryption key). Use the information you gathered earlier to enter this information.
The Xbox 360 will test the connection. If the test fails, try re-entering your network security key or restarting your Xbox 360 or your Verizon router.
If you receive an error message that indicates you will still be able to use the service, select B and Continue from the Connection Test screen.