When testing VTS against a database other than the two provided for, you will first need to discover the new database's underlying data types. Depending on the accuracy and completeness of the documentation supplied with the database, this may be challenging.
Once the data types have been discovered, build a type conversion table as described above. You should use the two tables provided in CONFIG.INI as a guide.
Finally, set the APPDatabaseConverter configuration variable to the name used as the heading for the data conversion table.