Configure Postback.php for Virtual Currency Site

I have a site where people fill surveys and offers and receive virtual currency. Offers are from various vendors. I need someone that can configure my [login to view URL] files to properly credit my users whenever they fill out an offer. The site is based off of a CPAlead script, so anyone with experience with this kind of script, please apply. My site is [login to view URL] and I would firstly like to connect offers from [login to view URL], [login to view URL] and usamp.com. If all goes well, I will be adding more offers, so this would be ongoing work.