Accepting Credit Card Payments

Sorry, the first postssss were put in the wrong place... Not sure this is a direct PHP question, however I know I will get some answers here. I have a customer that I am bidding a small project for. They want to be able to accept credit card payments for enrollment into a class. Their customer will fill out a form and pay via CC on the site. Is this something that I should just look to the host for whatever shopping cart they have or is there an easy to administer software package that I should look into. Or since it is a one item cart, is this something that I could code? Thanks for your help. Gary