You have to go into the router setup by typing 192.168.0.1 into the adress bar of your browser. The default username is admin and the default password is password, unless you have already changed them. (The password is sky if they are your ISP and they supplied the router.) Once in there, you can change the network name (SSID), hide it from being broadcast so people have to know it to log in first time, and apply a password of your own. You apply the settings, the router will save the changes and restart,and only you can now get in with your new password. You will have to View Available Networks on your laptop to connect first time.