If your web hosting account using cPanel as a control panel, you can watch this video tutorial to set up your add-on domain names. What is an add-on domain? An add-on domain is just like having a separate web site. The add-on domain will be hosted or pointed to a folder in your public_html folder of your main-domain. Some hosting companies offer this option (ex: Web Hosting Pad, HostGator, BlueHost etc). That mean you can add as many domain names / website in single account.
