Email address, but "undefined" username

[keithasims]

Hello,
I must have started registering one time and stopped in the middle. It now recognizes my email address, but not anything else. I don't have an if I say to send me my login information, the email says: "Your username is: undefined". I have a second email address, so I re-registered using it. Since I never use the one I registered with, is there a way to clear it out and let me change my profile to it?
Thanks.

[JohnE]

You can just change your email by clicking on 'user cp' on the header. Then there is an option to edit email and password.