I am trying to set SSL Host Headers and Secure Site Bindings in IIS7. I followed the directions on this website http://www.digicert.com/ssl-support/ssl-host-headers-iis-7.htm (among others), but when I run the appcmd command mentioned, I get the error "Object 'SET' is not supported. Run 'appcmd.exe /?' to display supported objects". I have also tryed "appcmd site set" but it still returns the same error. What am I doing wrong?
The server I am working on is Windows 2008 R2 x64, if that matters.