Ins and Outs of Virtual Server 2005 Administration and IIS

Found this post of David Wang very informative.

Virtual Server 2005 ships with a native code EXE program named VSWebApp.exe which calls the native COM based API. VSWebApp.exe implements CGI/1.1 to read/parse input and provide HTML as output, so it naturally runs as a CGI executable on IIS to provide a web-based administration interface.