How to: Add registration fields using profile module

How to add extra fields to drupal default registration form in your site?

Its very simple using profile module:
Go to Administer » Site building then choose modules and enable profile module,
save changes.
Now,

go to Administer » User management then choose profiles - here you will see a list of field types which you can add

* single-line textfield
* multi-line textfield
* checkbox
* list selection
* freeform list
* URL
* date

Add the fields which you wish the user to fill in the registration form of your site.

Lets see few examples:

1) If you wish your user to enter some realname field, then add a 'single-line textfield' & fill in the required information like title etc etc & at last click on 'Visible in user registration form' to allow this field to appear in registration form & then save it.
Here theres your 'realname' field with other drupal registration fields.

2) If you wish to add a text area of say 5x5, then add 'multi-line textfield' & follow the same procedure as above.

3) checkbox - this can be used for giving terms & conditions options