Customize and Fix Xtreme conversions tracking software PHP/MySql Developer

I'm trying to use a tracking software called xtreme conversions which records keyword data and referer URL for a sale. In other words, some code is put on the landing page of an ebook website. And another set of code is put on the thank you for your purchase page. The code is generated from the software. The way it is supposed to work is that it records all the keyword data for the visitor that brought them to the website as well as the keyword data that lead to a sale. Currently the software is not working and I need someone to go in and find out why and to fix it. Also, keyword data is not being recorded for those visitors coming from google. Keyword data must be recorded for users coming from [login to view URL] as well as all other google country sites, plus all yahoo country sites. Lastly, I need to modify the code so that I know what sales came from organic search and which came from paid search. I need functionality added that easily tells me this for each visitor as well as a summary. All the code of the software is available to be modified. It is all in php and mysql. I need someone that can work with me on instant messenger on an hour to hour basis. We can start off with one hour and see how it goes. I can pay $17.25 per hour. This coder must have at least 3 full years experience working with PHP and Mysql development. I am not looking for someone who makes websites, I need a programmer. We must be able to talk via instant messenger. You will have access to the software as well as all docs for the software. Coder MUST have a strong grasp of English and be able to communicate effectively in English. I must be able to understand you and vise versa.