Have you used Online-Billpay.com before? You may have an existing user.
If so, login to your existing user and click the "Register New Account" link on the menu.
If you don't remember your login information you can reset your password by clicking the "Forgot Username or Password" link on the Sign In page.
Passwords must meet the following requirements
Ditch the paper and receive your bills via email.
You'll get your bill delivered to your inbox, faster than you would normally receive it in the mail. And if you want a paper copy of your bill, you can always print one out from your online account.