add cronjob

Hi, I'm sure this would be very easy and very quick for someone who knows what they are doing. I need a cron job added to my server. This will need to be done via SSH, as my host doesn't support telnet. And they don't have a graphical way to add a cronjob via cpanel. Need it done cheap and fast. The purpose of the cron job is to link with my email marketing software to allow bulk email sending via cron. Three requirements please. 1. Add the cronjob 2. I will confirm that the cronjob is recognised by the email marketing application 3. Please provide a brief rundown of how you added the cronjob (i'd like to be able to do it next time) If you're available to do it like right now then great! I am online now!