If you are not sure that you have registered or
You try to register but the system says that "An account is attached to that email already"
Go Login Page and click on "Forgot your password" that will take you to the Password Reset page.
Enter your Primary Email Address in the text box and click on the Reset My Password button.
If the system does not recognize the email then you have not registered under that email address.
If the system recognizes the email address then it will send reset instructions to that email address.