MVC routing not working for non-default controller / root in virtual directory

I am using the default "ASP.NET MVC 2 Web Application" in IIS (which I do not have administrator access to) and for now I can go to

"server / ITEC"

I can't go to "server / ITEC / About" without returning the server, 404 error.

I also use RouteDebugger for testing - when I use the default "server / ITEC" it matches (as does the default home / index controller action), but when I manually type "server / ITEC / About" I don't know, t even see the RouteDebugger page. Also, note that when I put my index.html file in "server / Itec / About", it returns results, which makes me think the directory is configured to use the filesystem and not MVC routing when handling requests - this is a safe assumption ?

How do I update the Global.asax file so that I can return non-default controllers / actions? Or is it a server issue and how can I fix it?

Thank!

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace mikeProg
{
    // Note: For instructions on enabling IIS6 or IIS7 classic mode,
    // visit http://go.microsoft.com/?LinkId=9394801

    public class MvcApplication : System.Web.HttpApplication
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");           

            routes.MapRoute(
                "Default", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults            
            );

            RouteDebug.RouteDebugger.RewriteRoutesForTesting(RouteTable.Routes);

        }

        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();

            RegisterRoutes(RouteTable.Routes);
        }
    }
}