Hi Acrylian,
Yeah, I feel the no upgrade for 12 years.
The config file would be found in zp-core/zpconfig.php?
Would it be to add the line $conf['db_software'] = "MySQLi";?
$conf['mysql_user'] = "";
$conf['mysql_pass'] = "";
$conf['mysql_host'] = "localhost"; // Won't need to change this 90% of the time.
$conf['mysql_database'] = "";