Erm.. you confused the version numbers. Current IIS (official and with XP) is 6, Vista (and propably Windows Server 2008 too) comes with IIS 7.
A very good resource on IIS is
www.iis.net.
There i found this article here:
http://www.iis.net/articles/onepagea...dows-Vista---L
I think that is, what you are looking for.