[Zope] How to add an image to a ZClass

Hi, I am trying to add images to a ZClass. It can't be done through properties, so I tried to add one to the class itself. Fine, it allowed me to add an image, but I had to specify an image file. Now how do I go about adding a different image to each class instance? Thanks, Willie Willie Peloquin Senior Software Engineer - Contract http://www.ismi.net/~wpeloqui "It is unwise to stray from the obvious and simple."