Hard wire your computer to the router. Open an internet browser and input the router's IP address (192.168.0.1) in the address bar. It will ask you for the admin user name and password to log into the router. If you have never set this up before and this is a brand new router the default will be something like username: admin, password: password. Google your model number for the default log in information. Once your logged into the router you can set up your wireless encryption and set a password.