penny auction site

i need help with my penny auction site. 1. i moved files over 2. i added database and edited config 3. This is where I do not know how to set up the cron job i believe i need to do this but the old programmer is no where to be found. I also need some other updates done if you can do this but for right now i need clock to tick. penny***auction*[login to view URL] remove the *