To install a new wireless router, disconnect the power to the modem. Plug in the router. Connect the router to the modem with an Ethernet cable. Turn on the modem. Connect your computer or mobile device to the router's wireless network. Open an Internet browser, enter the IP address of the router into the address bar, and click Enter. Log in to the router management interface, and follow the prompts to set up the wireless network.
To connect to the wireless network, use the username and password that are printed on a label on the router.
Some wireless routers come with a built-in setup assistant program. When the first device connects to the wireless network and opens an Internet browser, the program automatically loads a setup screen. If no assistant program appears, find the IP address; it is usually printed on a label on the side or bottom of the router. Navigate the Internet browser to the IP address, and log in to the management interface using the default username and password from the router manual.
In the router management interface, change the name of the wireless network in the SSID field. Choose a new password. Apply the changes to complete the router setup.