Tracking Issues - Landing Page - Google

[Jbounce]

Hi guys,
Imagine a situation:
A user is on a landing page and likes the product, he clicks the BUY IT NOW button. He is taken to amazon where the item is placed into the shopping cart.
So the clicking on the BUY IT NOW button is a conversion.
Now how would I track this? Incorporate some kind of a code into the BUY IT NOW button or have the user go to a page with the code and then redirect him to amazon?

I don't have enough experience yet to do this. Can someone tell me the correct way to do this.

Thanks!

[jeet]

Can you show the button code you are using?
Basically if amazon is also tracking the click, then adding your own tracker in between can really screw up things...