PHP/Mysql Arcade Points System

I am looking to add a points system (php based) to my arcade similar to that found on Kongregate.com and gamegum.com. The site currently is built on php and uses a mysql database.

This project will be relatively easy for the skilled php/mysql coder. I am hoping to have it completed over the course of the next 2 - 3 weeks. This seems like a fair amount of time but with testing, back and fourth emails, etc... it will go fast!

For further details please read here: http://www.realityknights.com/points_system/

As an addition, if the programmer can make use of ajax/javascript where applicable, that would also be a great addition to the site. Thus someone with those skills stands a better chance of being hired.

Please let me know if you have any questions. Also, if you have a better idea after checking the link please do let me know.