A program of which I am an affiliate has a name squeeze page and then comes the sales page where the buy now button is.
My affiliate links, provided by the merchant, send users to the squeeze page, which is lousy and their sales page isn't that good either.
I want to have my own squeeze page and my own sales page with buy now button. When clicking buy now it should go to the merchants processing company (paypal) and pay him, but it MUST contain my affiliate ID so I don't lose my commission.
I have almost all the parameters the merchant is passing on to paypal, but the invoice ID is generated each time someone clicks buy now, anf I don't know if this is used for validation to sign up after paying.