django-registration adding additional fields in the registration form.

Question

Hi everyone, I am interested in adding additional fields in the registration form, like nickname and date of birth.

I am using django-registration 0.8, and I am planning to write my own custom form. I have looked at django-profiles and I think that the privacy control with that is not strong enough.

I plan to store these additional info in another database (mongodb) where I have direct access to them via a variable ( my_db). Which function should I overwrite in order to control where the data from the custom form will go to?