Email with Download link

[raymondg]

o.k. ...
Here is the process i would like for my customers to go through.
They visit my site (already published)
the click on the "buy now" Paypal button(already installed)
complete the transaction (paypal will send data via IPN)
will be redirected to my wewbsite, to a page that simply reads
"Check your email"
When they read the email message, they should simply be able to click on a link to download a file.
I somewhat understand Products/attributes.
but have no idea how to setup the email message.
Ive seen a lot of requests for info on this subject, i cant believe there is not some documentation on this.
I'm basically selling a virtual product, but i cant find anything in attributes that describes "Virtual Product"
when considering your reply please keep in mind.
I'm an idiot, i dont understand this stuff.
a step by step how to would be awesome!

[Ajeh]

Zen Cart has it's own checkout and does not use PayPal buttons ...