I'd like to perform an unattended installation of PostgreSQL 9.5 on a number of Windows 7 machines, ideally by assigning an MSI via Group Policy. There seems to be no MSI file, but the EnterpriseDB EXE installer supports "--mode unattended". That should be workable, but I also want to change some options in postgresql.conf and pg_hba.conf (to enable SSPI authentication, for example). What's the easiest way to do this? Is there a way I can edit the files inside the installer EXE, for example? (7-zip fails to extract it.) Or do I have to write my own script to modify the config files and restart the service afterwards?