Thank you for your post.
Currently, FileMaker Pro only supports ODBC drivers for Oracle, SQL Server and MySQL. Please see Knowledge Base Article #6420:
TSGal: this restriction applies only to ESS but you can import from almost any odbc source with the import records script step (as SELECT) or run odbc commands with the execute sql script step (insert, update, delete...).
You just have to install an odbc source ou your client machine as system(!) DSN with the appropriate driver for you SQL database and point your script steps to them.