Dentrix G4 Database Schema

We are attempting to get the database schema for a Dentrix G4 database. Since the Dentrix G4 database is a CTree ISAM flat database, to connect and read records within this database you need the schema first then you can connect. So we are looking for a person that has this Dentrix G4 database schema. You cannot find this schema with the Faircom CTree driver. This database schema should have the tables, fields, offset, data types, and data type sizes. If you have this schema then we are very interested in you. We also have future work to get the Dentrix G1-G3 database schemas also. Then in another task (not in this one) we could use this to write an application to extract the data from the database tables.