I have a client that received rental information via a form on their web site. It gets all the basic information and credit card to reserve the reservation on. What is the best and easiest way to secure the information?

The client is extremely non-technical, anything beyond receiving an email is too much for her. She recently purchased an SSL through her host, Bluehost, and now wants the reservation and contact forms to be secure through it.

The past hour of reading on here and elsewhere mainly recommends using a PHP database, PayPal, or some other shopping cart options. Like a lot of companies though, this one is struggling and can't spend more funds on this.

Please give me suggestions, or how to integrate PayPal into the existing form would be great. Thanks.