Hi,
Ok I finally installed ZetadocsArchive Database. The SQL script is trying to authenticate with user sa. By default SQL express only allows windows authentication. Right click the SQL Express instance->Properties->Security->Select SQL server and Windows Authentication.Restart the SQL service. Then reset the password for sa user found in ManualSQLScriptInstaller.cmd in line 11 /SAPWD.
Run Setup.exe etc
Regards,
Vasilis Charalambous