Add On Your Domain
Sign in to your Bluehost and click on the domain manager button at the top of the page. After the page is done loading, find your domain name in the window at the bottom left of the page and click on the unassigned link by the domain. After the assign domain page is loaded, you make sure your domain is showing in the drop down list, and the button is checked. Then you drop down and make sure the add on domain button is checked. Move down and check the create new directory button. All of these should be automatically done for you, all you should have to do is move down and click on the add domain button at the bottom of the page. Now its time to install word press and get started building your site.