Setting Database Config Items

[eluser]Kyle Ellman[/eluser]
I'm wanting to make an install script for an application. The script should completely set up the database, without the user having to access config/database.php at all.

I know that codeigniter config items can be set using

Code:

$this->config->set_item('item_name', 'item_value');

Is this possible with database config items? I haven't been able to so far, nor can I find an answer to this.

Thanks.