I tried using the isapi filter and it only sort of works. Any links of the first page use the original address not the one that was filtered. What I would like is for it to be completely transparent ie all links point to the virtual directory not the exe file. I assume this doesn't work because of the BASE tag that zope puts in the header. It also won't work because of my use of BASE0..n tags etc. How can these problems be overcome?

As much as I hate to suggest it, you may be forced to hack the code in lib/python/ZPublisher/HTTPRequest.py that determines what the BASE variable should be... or switch to using a more flexible server like Apache :^) Brian Lloyd brian@digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com