Amazon RSS with aff tag - How to?

Hi, is there any way to get a RSS feed from amazon US with affiliate ID on links? I can not find info about this, I got some 1 year old tips on adding the tag to the links but it seems not to be working anymore, atleast for the US feed.

Thanks to anyone who has some info about this.

nobody knows how to do this?

I hope this tutorial will help you!

http://www.amazon.com/gp/tagging/rss-help.html