Cron Jobs Help

I have a mailing script called sendstudio. I have installed it on server, my webhost is unix with cpanel. The script requires the cron jobs be enabled on the server to be able to send the scheduled emails from the script. I am not able to enable the cron job from the server and not able to make the script work. I need help in getting the cron job set on my server & the script should be working. Also show me how to do it. Please bid if you know about this sendstudio script, I will pay only when the script is working.