Windows Server 2008 R2 - How do I change IIS Settings?
Check Server Manager -> Roles and verify if you have Web Server (IIS) installed. If yes, make sure you have IIS Management Console installed.
type IIS in the search bar it should bring you to the internet services manager, or you can click start, programs, admnistrative tools and the IIS maanger should be listed
SSRS 2008 does not require IIS to be installed, therefore the SSRS Virtual Directories will not show up in IIS configuration tools anyway!
http://blogs.msdn.com/b/bwelcker/archive/2007/12/04/everybody-why-leave-iis.aspx