[url removed, login to view] needs their Google Buy Now buttons to be integrated with Google's Checkout API. What we need, is for customer's upon completion of their payment through Google Checkout, to be able to download our .zip file containing our product. We have read into this, and it involves apparently the use of Google's Checkout API (XML API or HTML API). It is very confusing what is needed to be done, but it is simple what we need. To be able to edit the confirmation page and give customers the ability to donwload the product (.zip file). The location of the zip file must not be given to the customer however. If adding an Activation Code is required, then it would have to be one that generates a new code each time.