[Zope] Representing an external server in a tree?

I am building framed online learning environments and I am very new to zope. Lot's of it's features say migrate from a static site especially navigation trees which I currently do in JavaScript by hand. I think I could bring in projects 6 months early. If I did I could concentrate on content rather than architecture and maintenance. However I still need to reference external webservers within the navigation tree. The only way I can see of doing this is to upload a HTML document as a file and have it meta refresh to the external website which runs automated assessment software. Is there a more elegant way of doing this? Thanks Andrew Bunney Learning Design Demonstrator Business School, Bournemouth University, UK.