IIS Solution Center and More
IIS 6 Solution Center
IIS 5, 5.1 Solution Center
At the bottom of the IIS 5 Solution center you will find a link for Information on the "Nimda" worm. Hmmm... Not sure if that gives correct information but it sure as hell reminds you of the mark it left... :)
For learning all the new stuff on IIS 7 ... do visit http://learn.iis.net/ and for questions: http://forums.iis.net/
Hope this helps.