You can use this short url : http://www.amazon.com/gp/product/ASIN/?tag=TRACKING-ID Just replace ASIN and TRACKING-ID with yours
You can also use the amazon associates toolbar, on the amazon.com site, to create copy/paste html which creates image as well as text links, that is one of the best options to avoid typos, and to ensure that the link structure is using the current format as they've changed up a few times already. thnx, PuReWebDev
The associates toolbar is awesome. As long as I'm signed into Amazon it displays while I browse the site and has a "Link to this page" button on the left that takes me to a simple wizard I can use to customize a link to that page.