PHP + AJAX modification. Easy and Quick Money!!

This project is to modify an existing script I have that is a form and is having ajax issues. Problem: Form will not save. Every time you enter a box it sends a total ajax request for all fields, it needs to be modified to do it individually. To get paid you must make: My form to work as if the ajax requests are individual. So when someone presses a button, an ajax request is only made for that button and not the entire page. And it should save and work properly. The successful bidder: Must not be a company. Must be an individual. Must be able to prove to me they know php and ajax. XML is a bonus!