Pay per Download Script

[euphoriastudio]

I'm looking to add templates to my website, I wish to make them purchasable and then immediately allow the user to download after the purchase has been confirmed. kind of like this site:
http://www.hypertemplates.com/?gclid=CNvqgZ2SkZMCFRJIagodMDbVgQ
you click buy and they allow you to download the file. I've seen sites where after a template is purchased it sends the zip file to the customer's email. Anyone have any ideas on how i can do this?

[Gorkfu]

You can do this by making a custom script that uses paypal's ipn. Where user buyers item, sends payment, paypal triggers a e-mail to be sent to user with download link. There are several scripts out there that do this. There was a free one I saw awhile back that had good potential. It was on hotscripts, but I don't remember the name.