Just having completed the new install and taking extra special care - I guess I must have made a boo-boo
What I meant previously was
I changed the /admin/ - that worked. I then removed those lines and that also worked - However thats irrelevant clearly my mistake.


FYI here is the header from the /catalog/includes/configure.php created in this new install - it does differ from the one you posted.
There is one other difference - in the comment line after STORE_SESSIONS is defined.
The differences are all in commented lines, there is no functional difference I can see
Code:
/**
* @package Configuration Settings circa 1.3.9
* @copyright Copyright 2003-2010 Zen Cart Development Team
* @copyright Portions Copyright 2003 osCommerce
* @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
* File Built by zc_install on 2011-01-19 09:46:41
*/
/*************** NOTE: This file is similar, but DIFFERENT from the "admin" version of configure.php. ***********/
/*************** The 2 files should be kept separate and not used to overwrite each other. ***********/