How can I add a "verify email" field that compares and validates the entered email addresses to the registration form?

Your advise is much appreciated!

first things first, please! what is your system?

ajaxed email address validation has been built-in in CB. you may want to create a new field by the "Email Address" type and in the Email specific Parameters enable the Enable Email checker (please see my screenshot).

hope this helps

Thanks alot for your advise. I think I might have expressed myself wrongly however. What I ment was, if it's possible to VALIDATE the entered email address by comparing the entry in a second "validate" email field to the entry in the email proper field. Is this possible?