Comcast is one of the largest cable television, high-speed Internet and telephone service providers in the nation. Whether you are adding a new computer to your home or office, connecting a computer to an existing Comcast Internet connection is quick and convenient. Using an Ethernet cable and a Comcast modem or router, you can begin to share network connections within a matter of minutes.
Turn on the wireless Internet switch on your laptop computer. If you are using a desktop computer with an internal or external wireless device, make sure it is functioning. If your laptop or desktop is not Internet-cable, you can skip to Step 3 and use an Ethernet connection directly from your Comcast modem.
Wait a few seconds for your computer to detect the wireless Internet connection. Select the Comcast Wi-Fi connection from the list and wait for it to connect. If your connection is secure, you will need to enter an ID and password to access the connection. After the Wi-Fi connection is established, open your Web browser to begin browsing the Web.
Connect an Ethernet cable from your Comcast modem to your computer. Attach one end of the Ethernet cable to the port on the back of the modem and the other end of the Ethernet cable to the Ethernet port on your desktop or laptop computer.
Wait a few seconds for an Internet connection to be established between the Comcast modem and the computer. Once you see a green light flashing, it means data is being transferred between the computer and modem and you are ready to browse the Web.
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