I thought I could see an ASP.NET features panel (I don't know the exact name, though, some of them are .Net Compilation, .Net Roles, .Net Users and so on) on the IIS7 manager when I click a site node in the nodes list of the IIS7 manager. Now, I can see only IIS and Management, but no ASP.NET.
I first installed .NET Framework 4.0, so after installing IIS7, I used the aspnet_regiis tool, and seemed it worked well.
My environment is
Windows 7 Pro
IIS 7.5.7600
.NET Framework 4.0