I need integrate old payment IPN (paypal File codes) to my new payment method

I need integrate old payment IPN(paypal File codes) to my new payment method.I atteached files,You have to integrate code from ipn_auction,ipn_buybids,ipn_buynow files to [login to view URL] so that it work with my new payment method code. I can pay 10-12$ for it and will give other works as this to my developer. Please bid who can do it and do it for 10-12$ [login to view URL] rar file there are 2 folders old payment and new payment, IPN files are in old payment folder