Start Metro IE from powershell

$code = @"
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Win8 {

    [ComImport, Guid("2e941141-7f97-4756-ba1d-9decde894a3d"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    interface IApplicationActivationManager
    {
        IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] UInt32 options, [Out] out UInt32 processId);
    }

[ComImport, Guid("45BA127D-10A8-46EA-8AB7-56EA9078943C")]//Application Activation Manager
    public class ApplicationActivationManager : IApplicationActivationManager
    {
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)/*, PreserveSig*/]
        public extern IntPtr ActivateApplication([In] String appUserModelId, [In] String arguments, [In] UInt32 options, [Out] out UInt32 processId);

    }

}
"@

add-type -TypeDefinition $code
$appman = new-object Win8.ApplicationActivationManager

$appman.ActivateApplication("DefaultBrowser_NOPUBLISHERID!Microsoft.InternetExplorer.Default",$null,0,[ref]0)