need help on updating profile of member after registration

Basic Requirements

Allow a shopper to register as a member.

Allow an existing member to update the profile.

When registering and updating member profile, ensure that the eMail account provided by the shopper is unique in the database.

Additional Requirements

Provide the password to a member who has forgotten it after he has provided the right answer to a question. The question and answer are captured during member’s registration.
[SMTP service is not available on the server for you to eMail the password to the member. Hence you can only display the password on screen.]

Check to ensure that the person is at least 18 years old on the date of registration as member.


THANKS