We found it’s not worth the time to do this. It won’t work reliably.
You’re in for a world of hurt. We’ve given up on the idea after several
months of trying (and some great feedback from this list). There are
some on this list who claim to have gotten it to work, but that might
just be luck.
We’re now using Apache on a higher port, and using ISAPIRewrite to proxy
requests to it. It works great. I will be writing an article on how to
do this and will announce it here.