OSCOMMERCE - Drivers Extension

I need to add a Driver module to my oscommerce shop. as u know ORDERS link to CUSTOMERS and STORES but NOT drivers, so now we i want to allow a DRIVER to login to the system and to be able to ACCEPT (ship) an order. After driver accepts they will be ASSIGNED the order i.e orders_id link to drivers_id a few new tables are needed and columns in existing tables i have the full scope mapped out in my mind i know what i need its not a huge amount but u must be good at php mysql and know OSCOMMERCE as this is the system i am using ill provide ftp to alter files etc no time wasters