Like others in this thread I have to question what your goal is here, and you haven't stated it clearly. While the above code will start an Outlook client, I don't see the point of doing this from a CGI or any Perl script. That's what the start menu is for :).

Now, if your goal is to have your Perl script make Outlook actually do something besides show the GUI, you should look at Win32::OLE. Note that to make use of this module, you will have to understand the Outlook object model.