See ? . . . . . . #!/bin/sh on the 1st line and a "simple" command on the 2nd line !
Do explore a little and see what all the hourly to monthly tasks are about.
Sure for the ¨lazy´ ones there is also an X config version for cron you will find it in your KDE menu ( or whatever wm you are using ) Mandrakers look for;
Configuration --> Other --> X-Cron
I only did explain all this to you so you would better understand how things are done by the sofware you are running !
-- May 16 2003 ( Revised Dec 12 2005 ) --