how to override includes > modules > pages > page_folder > header_php.php

I have posted this in a different thread/section and it was answered (incorrectly?) or ignored. Anyway, I am looking at how to override the header_php.php file for a specific page. The file resides in modules>pages>page_name_folder>header_php.php. I have tried to add MY_TEMPLATE on each directory level with the new header_php.php file, but it never seems to be read. Can someone point me to where to put the new file so I can override it?

I have tried using (for the checkout_confirmation for instance)
includes\modules\MYTEMPLATE\pages\checkout_confirmation
includes\modules\pages\MYTEMPLATE\checkout_confirmation
includes\modules\pages\checkout_confirmation\MYTEMPLATE
includes\templates\MYTEMPLATE\checkout_confirmation

Any help is appreciated.

There is no officially-sanctioned way of over-riding these files in the current version of Zen Cart.

As Kuroi has already said, the header_php.php files cannot be overridden using the template system. Your options are...

1. Edit the file directly, be careful and keep a backup copy. Make notes because upgrades will overwrite your changes.
2. Hook into a notifier used in the header_php.php file.
3. Use a main_template_vars.php file if one does not already exist.
4. Add the code to the template file instead of the header file.
5. Create a new page and use it instead of the existing page.

Regards,
Christian.

thanks for the tips :)