IIS 6 Error: "Unable to read configuration for Microsoft Internet Information Server" while trying to add FrontPage Extensions 2002 to a new web site. The solution was in this article on Usenet (thanks Google). Basically, Sharepoint Portal Services, which is web-based, is required to make this installation. Sharepoint had been stopped on the server (by me) due to our 'if you don't need it, disable it' policy. Well, turns out you need it. So, if you have this problem, there's your potential solution.