To find your WEP encryption key, access your router using a Web browser. Many routers have an IP address of 192.168.1.1 and are accessible at https://192.168.1.1. Enter your user name and password into the prompt that appears to access your router and view or change the WEP key. If you have not set a new name or password, many routers default to a user name of "admin" and a password of either "admin" or "password." Some have no password.
If you cannot access your router at https://192.168.1.1, check the bottom of your router and any other documentation for a default IP address or access URL. The IP address may also appear on your Internet provider's Web page.
If you haven't set a user name and password yet and can't find the default, search for your router model at routerPasswords.com. If you have set a password but don't remember it, perform a hard reset of the router to restore the default password. This also resets all of the router's settings to their factory defaults. To perform a hard reset, press the small reset button on your router and hold it down for at least 15 seconds. The router restarts and allows you to enter a new user name and password.