Just follow these steps to watch CBS.com content using Chromecast:

1. Install Chrome browser on your computer
2. Open Chrome, and install the Google Cast extension
3. Connect your computer to the same Wi-Fi network as your Chromecast
4. Go to CBS.com, click the cast button shown here User-added image, and watch your favorite CBS shows live and and on demand.

If you already have Chrome installed, you can get the Google Cast extension, here. If you do not have Chrome installed, you can download it here .