I am using a Zope site as a repository for documentation on a business application that I'm involved in supporting. Site content presently includes a mixture of HTML pages and MS Word and Excel documents. The site uses a frameset to contain a DTML-Tree based navigation structure in the left frame, and displayed pages in the right frame. When I attempt to open MS Office documents in the right frame they typically open fine the 1st time around, but if I move off the page and seek to revisit them I'm presented with a download dialog box rather than the page itself. I imagine that this is a caching issue. If anyone was able to help with some ideas on the behaviour of MS Office documents in Zope it would be most appreciated. Best regards Adam