Gregg,

Thanks for asking.

You don't need Software to do this.

I cover this in my Hotsheet called "How To Sell Ebooks On Autopilot With PayPal" which you'll find here www.hotsheetcity.com

In essence what you do is have no links to your download/thankyou page from anywhere and on that page you have the link to your product - both of these can be in a different folder on your website.

You make your Buy botton encrypted so the page location is not visible.

Michael Ross