Updating with a Checkbox

[eluser]EvanCalkins[/eluser]
Hello,

I am fairly new to Code Igniter ( and php ) and have a question on a very small application I'm developing for my church.

I am building a small system that allows youth to sign up for camp online, and record those registrants into a database. I am then creating a simple back-end for the church admin to view all the registrants and update their record if they have paid.

Currently, I have all the records being pulled from the database and spit out into a simple table. I need the ability for a church admin to go into this a check a checkbox if the registrant has paid, and on submit, the database would update the 'paid' field.

Would someone care to give me an idea of what this action would look like?