I mean , I am ready with scripts , hosting etc for starting a payment Gateway , but before that I have heard like paypal has tie ups with many banks world wide , So my question is in order to start a payment gateway , Do i Have to tie up with banks or anything i have to do legally before starting the website ?Thanks for your answers , i am waiting , and btw , I have not selected any domain , can anyone suggest me a best domain for a payment processor . Thanks again waiting for your responds.