Oh okay. Not sure how to apply up front of the upgrade but until after the real upgrade. since that is when the config file is created. It starts out as a blank file until you run the install script.
But anyway the config file is includes/config.inc.php.
You can edit it but you may still need to go into the control panel to select submit on some items after you are done editing it.
This is due to some items in the config file are stored in the tables and some are used from the config file.
But usually it will update the tables when needed. But if it hiccups just open the control panel section in question and just hit the submit button.
When version 8 comes out almost all settings will be stored in the tables. Right now it is hit or miss where they are used from.
Last edited by Ruben; 08/19/2009 2:04 PM. Reason: had wrong location for config file