According to this page, I should be able to view and delete Virtual Directories from IIS Manager: http://technet.microsoft.com/en-us/library/cc753247(WS.10).aspx.
I can confirm that VDirs exist by running this from the command prompt:
c:\Windows\System32\inetsrv>appcmd list vdir
But from IIS manager, I only see "View Virtual Directories" in the "Actions Pane" when I click on "Default Web Site" or a specific "Virtual Application". But when I click "View Virtual Directories" nothing shows up in the listing.
So how can I see and delete Virtual Directories from the IIS 7 Manager, when I know they are they by using the APPCMD command line tool?