Mike Volodarsky, a Program Manager on Microsoft's IIS Team, has published a great Blog Post on developing modules and handlers for IIS7 using .Net.  The post goes through how to decide which to develop, which tools you need and how to develop modules and handlers and deploy them to an IIS7 server.  This posting is well worth looking at if you are interested in IIS7 Development, http://mvolo.com/blogs/serverside/archive/2007/08/15/Developing-IIS7-web-server-features-with-the-.NET-framework.aspx.

This is the start of an IIS7 .Net Developer series, so keep an eye on Mike's blog for more content coming soon.