where can I download acucobol-gt?? I must use c-treeRTG
That seems very similar to a product already in ACUCOBOL-GT called Acu4GL . Acu4GL takes COBOL I-O and translates it into SQL so you can have your data in RDBMs like Oracle MSSQL DB2 or other ODBC compliant databases.
To get ACUCOBOL-GT and or Acu4GL, you can use this web site ... www.microfocus.com/.../contactus.aspx