Basically I want to integrate an application written in C# with IIS, and this application is not created with ASP.NET but has the ability to output HTML - so what I'm after is hooking into IIS somehow and catching all requests to a "Web Site" (IIS-concept) and allowing my custom application to handle them.
I honestly have no idea where to even start looking at this sort of thing, so any help is appriciated.
tl;dr-version: How would I go about creating something aching to an apache module for IIS ?