I\'ve been looking all over for decent instructions on how to get hgweb working on IIS but I haven\'t found much of worth.
There\'s this \"step by step\" on the Merc
I was running into a "...can not load module..." type error and after some reading, the key for me was to ignore the Library.zip file in the Mercurial folder, and instead use the one from C:\Program Files (x86)\TortoiseHg folder.
That tip I found as #6 in this guide:
http://www.endswithsaurus.com/2010/05/setting-up-and-configuring-mercurial-in.html
Hope this helps someone...