Changing your wordpress domain from http://youdomain.com to http://www.yourdomain.com
When you first set up a WordPress site the URL is http://yoursite.com. If you want the www, watch this WordPress video tutorial.
Brad Hauck (MrWebMarketing) is an Author, Conference Speaker and Consultant. Over the past 5 yrs he's brought in over 50 million visitors to his & clients sites.