Get your new computer up and running with your Comcast Internet service in no time. The steps you need to take to accomplish this task varies depending upon your goal. When the goal is to replace an old computer that was formally connected directly to your Comcast modem, one procedure is followed. If the goal is to add a new computer to your wireless home network with Comcast Internet service, another procedure must be followed. In any case, you will be surfing the Web courtesy of Comcast very soon.
Connect the New Computer to the Comcast Modem or Gateway
Shut down the computer.
Plug the coaxial cable, which is connected to the cable wall outlet installed by the Comcast technician, into the modem or gateway's "Cable" terminal. Secure the cable's connection to the terminal by twisting the screw-on connector, which encases the cable's plug, clockwise until finger-tight.
Connect the modem or gateway device to a power source and turn it on.
Insert one end of an Ethernet cable into the modem or gateway's Ethernet port. Insert the other end of the Ethernet cable into the Ethernet port on the computer.
Launch the computer's Web browser. Follow the on-screen instructions to download the Comcast installation software onto your computer.
Log in to the computer using an administrator account. Open the Comcast installation program. Follow the on-screen instructions to complete the Comcast installation set up for your computer.
Add a New Windows Computer to Your Home Network with Comcast Service
Launch the Web browser on the computer serving as the main computer in your home network. This computer is connected directly to your Comcast gateway via a wired connection and it has the Comcast software installed on it. Enter "http://10.0.0.1" in the browser address bar if you are using a SMCD3GNV or TG852G wireless gateway. Enter "http://192.168.1.1" in the browser address bar if you are using a Netgear WNR1000, WGR614v8 or CG814v 1&2; WNR3500; or Linksys WRT310N, WCG200v 1&2 or BEFCMUH4 router or gateway.
Log in to the device's user interface. The default user name and password is either "admin" and "password," blank username and "password," or "comcast" and "1234."
Create a name ("SSID") for your home network and establish a network security key. Refer to the router's user guide for specific instructions on how to complete this task for the type of router you are using.
Click the Network icon located on new computer's task bar. Select "Open Network and Sharing Center."
Click "Manage wireless networks" in the left column. Click "Add" to launch the New Connection Wizard. Follow the wizard's prompts to add the new computer to your wireless network. Be prepared, you will be prompted to enter your network's name and security key.
- Digital Vision./Digital Vision/Getty Images