Hi, I am banging my head against the wall trying to figure out how I would best use rbickers Photo-Product from Page Templates, but I guess the problem is the same for any Zope-Product that does not come with ZPT-Support out of the box. I guess, one can use the Photo product without any real problem, for example, I can do <a Href="#" tal:attributes="href string:${my_batch/id}/view"> <img src="image.jpg" tal:attributes="src string:${my_batch/id}?display=thumbnail"> </a> to show the thumbnails of my Photos and link to the "view" method, but is this really TAL??? I am able to call some methods on the PhotoObjects as well like <ul> <li tal:repeat="displays here/displayLinks" tal:content="structure displays">Link to a size</li> </ul> To get the links to different size-links... ...but how would I express <dtml-var "tag(display=REQUEST.get('display', 'small'), border=0, cookie=1)"> in TAL to get the cookie-enabled version of the Photo??? In general, what's the best way to learn how to use existing products in Templates?? Thanks in advance Jochen