[Simon Moon]

Even simpler...
Put this in your crontab (on console do "crontab -e") and replace the url with the actual cron.php location.

* * * * * /usr/bin/wget -q http://forums.domain.com/cron.php >/dev/null 2>&1

Now only remove this from the footer template:

	<!-- Do not remove $cronimage or your scheduled tasks will cease to function -->
	$cronimage
	<!-- Do not remove $cronimage or your scheduled tasks will cease to function -->

Thats it. You could go and do some code edits to remove the functions behind it, but thats not really needed, there is no real impact there. The really great thing though is that you now have real cron jobs, that are run once a minute and it doesn't matter if you have a very active or a hardly visited forum, the load will be the same. Tested on a 3.6.7 vB.