Build standalone payment gateway: interwsitch

My client needs this done This payment gateway will be built on a sub domain and the customer will click pay now to get to this gateway so this gateway will be standing alone but we will find a way to make it seem integrated. Attached are the UAT documents and DIY documents The document is provided by Interswitch WebPay to guide web site developer on what he need to put in place when developing or re-configuring the site to enable Interswitch certify that they have properly integrated to the interswitch payment platform. If you can do this project. I will provide the site(s) Please give me your sk ype Id . We can discuss more...I will pay you on here freelancers. Thanks. Read thoroughly and if you can make the site to have all the YES answers then we can go ahead. Thanks