Hi vector1 -
If you created a trial site, there was a field for "user name" that you were required to input.
If you included your correct email address, it sent you a link to your email that should allow you to log on.
If you still can't get in, call (800) 892-0449 and let them know your site name and email address, and they can reset your password.
Once you log in once, you can choose "remember this password" and it will auto-fill in the username/password when you select your site.
Hope that helps,
Steve