Due to the fact that I can't tell if you have made any changes to your
Informix server let alone what the password is for it you will have to
configure the Informix server by hand.

There is a file called ifmx_create.sql in this directory
(horde/scripts/database) that all you have to do is import that into your
Informix database.

If you make changes to the name of the database, the manager name or
password, you will need to make the same changes to your
imp/config/defaults.php3 file as well.

In other words, make sure your database names match what's in
imp/config/defaults.php3.
