CRE Loaded B2B Modification

I need a modification made to the [login to view URL] page in CRE Loaded B2B. I want a three radio buttons added where the user can choose what type of company they are, if their company type does not fit one of the option then there will be a text field to allow the company type to be written. The value needs to be added to the database and also send to the store owner as part of the notification email of a new customer on the site. At the moment an email is sent to the store owner when a new customer registers on the store.