If the registration system is requesting your password when you are trying to register, and you do not remember/have one, you can do either of the following:
OPTION 1: Click the Start a New Registration link.
RESULT: Start a new registration from scratch.
WORTH IT?: Yes, as long as you are ok with entering your personal information without assistance.
OPTION 2: Click the Forgot Your Password link.
RESULT: If your email system doesn't screen the password reset email into Junk or not even allow it on your server, it will arrive within minutes. You then click a link in the email to reset your password.
WORTH IT? : Only if you want the registration system to pre-populate your personal information, and you are willing to wait for an email that may never arrive.