I created a virtual directory and pointed the site/URL to the directory that the page should be running at. If I go to browser and type http://www.mytestwebsite.com/about.html it works, but if I type http://mytestwebsite.com/about.html, it says page cannot be displayed.

So it seems to me it's the matter of whether I put in www. or not.

Is there a way I can fix this using virtual directory/anything that may help?