Cron is a program supplied by the host that allows a script to be ran at a preset time. Many osCommerce contributions make use of Cron but not all hosts offer it so those contributions can't be used to their fullest potential on such servers.
The purpose of this contribution is to simulate a Cron job. Code is added to the index page of your admin and when it is loaded, the enabled jobs are checked and ran, if it is their time to be ran. This isn't as accurate as a real Cron job but it will run the script automatically, which is what is needed.
This contribution is compatible with all versions of osCommerce.
The support thread is located here: