[Zabbix-users] can't connect to the db

[Eduard S. A. <esa...@al...>]

Hi again (and sorry),
when typing http://localhost/zabbix in my browser for the initial 
configuration, I get the following message:
*Warning*: Unable to connect to PostgreSQL server: (null) in 
*/var/www/html/zabbix/include/db.inc.php* on line *19*
Error connecting to database
As the manual says, I wrote on the db.inc.php:
$DB_TYPE        ="POSTGRESQL";
//      $DB_TYPE        ="MYSQL";
        $DB_SERVER      ="localhost";
        $DB_DATABASE    ="zabbix";
        $DB_USER        ="";
        $DB_PASSWORD    ="";
Could it be that I should've created a /zabbix_db_user/ on the database? 
If not, where's the problem?
As you may have noticed, I'm a newbie at zabbix, so excuse me for my 
ignorance.
Thank you.