I worked on magento and I want to run cron job on the server.
If I run domainname/magentofolder/cron.php in the address bar it works.
But when I try to set up cron job on cpanel it will not working.
If executing the php cron file doesn't work you can also try so set up the cron to use the cron.sh file like this:
*/5 * * * * /bin/sh /absolute/path/to/magento/cron.sh
Try this
*/5 * * * * wget -O /dev/null -q http://www.YOURDOMAIN.com/PATH_TO_MAGENTO/cron.php > /dev/null
more information is on xtento