member management

I need a member management script similar to Pitbull Pro: [login to view URL] but with some additions/changes. The signup form fields will be different - need a few more fields than their signup form, such as business name, fax, mobile, contact name, company position, and more, and these differences need to be incorporated into the admin panel. No expiry - will delete customers in admin, or cutomer can 'unsubscribe'. It is for customers to register, then be sent product information on a regular basis (mass email) Need to be able to add/delete members, view all their signup details, need to be approved before they are fully registered. At this stage, don't need a members area - but customers need to be able to retrieve their password if they have forgotten it.