I have no concrete idea of what I'm doing, but I've managed to get pretty far... I have a product class that has an attribute that is an OFS.Image.File object. I have setter and getter methods called setFile() and getFile(), respectively. So far I can upload files and they get stored into my product, and I can even get the File objects out (via scripting). But what I'm not sure how to do is to access the file objects via a web path. Something to the effect of /stuff/product_instance/getFile. At this point /stuff/product_instance/getFile almost works. It works fine with images, text files, pdf on the Mac... But word documents don't seem to work, as if the content-type isn't being recognized by the browser on the download, i.e. Word docs are rendered as text files in the browser window. I have had this problem before, but my solution was to attach a file precondition that set some response headers: hdr_name = "content-disposition" hdr_value = 'attachment; filename="%s"' % filename context.REQUEST.RESPONSE.setHeader( hdr_name, hdr_value ) But now I have the File object embedded inside another object. How could I attach a precondition that would get called if the file is accessed via /stuff/product_instance/getFile? When I tried passing the name of an external script to the File constructor, but that doesn't seem to get called. Any ideas or help? Damon.