I have developed a pretty complex database to track services and billing for therapists working in the NJ Early Intervention system.  Everything works fine, except that the State has contracted with a bill payment entity which only accepts electronic billing.  Claims are submitted using the ASC X12 837 format, and the explanation of payment is returned in the 835 format.  This is way beyond my abilities to produce the correct claim forms, or to process the explanation of payments back into my database.  Do you know of any company which can facilitate this kind of interaction between an Access database and an electronic billing system?