Paypal IPN integration with PHP and MySQL

I need to integrate Paypal IPN with our current system. We sell classified ads for job seekers and need to charge them a small fee to place them on the website. So the process is simple: 1. Save the applicant's input in a mysql table (exists). 2. Send the applicant to the paypal system. 3. Make sure they paid and put into the table under a "paid?" column. 4. Send e-mail confirming success to me and to the user. Very simple if you know what you are doing. I basically need the part where the payment is done. I don't know how this will work but i will not give you access to my paypal account. Are you able to do this without accessing my account? I will provide you with the account e-mail and all the information you request but of course, not the password. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform php, mysql, paypal ipn