change admin username on WordPress
http://www.wpqueen.com
The username "admin" is one of the most common usernames amongst WordPress users. Often when a WordPress blog was originally set up this name was selected. If it was originally set up with the install it usually cannot be deleted by going to Users in your WordPress dashboard.
In order to change the name to something less likely to be targeted by hackers then you need to login to your cpanel.
This short video shows you how to quickly and easily change the username from admin to something stronger.
http://www.wpqueen.com