This contribution adds an additional dropdown field in the create_account.php screen. The coding in this particular one asks the customer where they heard about the store and has a dropdwon list including answers Search Engine, Magazine, Television etc. ALTHOUGH - This can be edited to ask whatever question you wish and give whatever answers you want in the dropdown list. You can also choose if the field is a compulsary or non compulsary for the customer to complete. N.B. Ensure you backup first.