First, locate the folder that refers to the version of osCommerce you have installed. The files in this
contribution are organized into 2 folders:
osCommerce 2.2ms2 files and
osCommerce 2.3 files
UPLOAD the files in the
1_New_Files_to_upload folder & keep the directory structure!!!
NOTE: If your shop is in a different folder than "catalog" or if it is in the root folder, adjust that in the paths below.
NOTE: If you changed the name of your admin directory, the files will have to be loaded into that directory.
catalog/admin/prices_per.php
catalog/admin/includes/language/(your language)/prices_per.php