WPF Browser controll will not run activeX on Vista

Question

I have an WPF application that hosts a control. After loading I set the control to navigate to a web camera.

this.WebBrowser.Navigate(this.NodeUrl);

This web camera will run some active X controlls.

On an XP machine in the regular broser IE7 these run fine and I see video.

But the hosted browser in the WPF does nut run the active X.

Any idea how to cure this

<UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="CellStack.UI.Configuration.BrowserDialog">
    <WebBrowser x:Name="WebBrowser" />
</UserControl>


public BrowserDialog()
{
    InitializeComponent();
    this.Loaded += new RoutedEventHandler(BrowserDialog_Loaded);
}

private void BrowserDialog_Loaded(object sender, RoutedEventArgs e)
{
    this.WebBrowser.Navigate(this.NodeUrl);
}