I just tried to get Siremis working with postgres. First I had problems because I created the table and columns with uppercase letters and the behaviour of mysql and postgres is different in this aspect so the Siremis queries weren't successful. Now I created the user access table the following way: CREATE TABLE ob_users ( sysid serial NOT NULL, userid varchar(15) NOT NULL, password varchar(15) default NULL, PRIMARY KEY (sysid) ); I also modified Config.xml: Driver="Pdo_Pgsql" instead of Driver="Pdo_Mysql" and Siremis seems to work fine with postgres. cheers, karl heinz