I'm trying to extend the basic user registration form and profile included in satchmo store, but I'm in problems with that.

This what I've done:

Create a new app "extendedprofile"

Wrote a models.py that extends the satchmo_store.contact.models class and add the custom name fields.

wrote an admin.py that unregister the Contact class and register my newapp but this still showing me the default user profile form.

Maybe some one can show me the correct way to do this?