You should be able to view and/or change your network key on the wireless security tab of your router set up page. See your router documentation or go to the router manufacturer website for instructions on how to access the set up page. You can also reset
your router by depressing the reset button on the back of the router for about 10 seconds, then go to your router set up page to configure security with a new password or passphrase.
Jim
Microsoft MVP Consumer Security - Forum Moderator - Live One Care - Live Mesh - Microsoft Security Essentials