I'm looking to do something very specific, so I'm hoping someone can help me at least get me started in the right direction.
The objective:
When a user is "checking out" during an eCommerce transaction, they need to be able to select an organization that a portion/percentage of their sale will be contributed to as a donation. I'm looking for a search option in the checkout process that will narrow down a large list of organizations (based on City, Country, Organization Name etc) and display the results on the same page.

The last part of the entire process will be that the results will appear with a selectable radio button (or something that will function in a similar manner) that will then post that information and send it along with the rest of the order and checkout information.

I have searched on the forums for awhile, and have found that I'm gonna need a combo of PHP, MYSQL and jquery or Ajax or Javascript. I've done very basic search/results with PHP and MySQL and very basic form handling, but don't have the knowledge on how to do this!

I don't know if this type of search/results combo has a name or description, but I've been unable to even find an example of what I'm looking for.

I have found only an example of the search/results display, without the adding to the form. https://membership.usarugby.org/showReports.aspx

Any suggestions would be GREATLY appreciated. Even if it's a book to read or even a different way of handling this project.

THANK YOU VERY MUCH!

Eli0086 (Liz)