Showing image for datapoints in Scatter series in Silverlight

Hi,

   I want to show an image for datapoints (same image for each data point) of the scatter series.the xaml looks like this :
 

    
       
       
   
   
                   Width="800" Height="400"
           Background="Gray">
           
                            IndependentValueBinding="{Binding Path=Key}"
            DependentValueBinding="{Binding Path=Value}">
               
           
       
   

Then,
The code sets the style in this way :
   ((ScatterSeries)mcChart_CustomSection.Series[0]).ItemsSource =
                new KeyValuePair[]{
                    new KeyValuePair(1, 140),
                    new KeyValuePair(2, 150)                                                
                };

            var ss1 = (ScatterSeries)mcChart_CustomSection.Series[0];
            mcChart_CustomSection.Series.Remove(ss1);
            ss1.DataPointStyle = (Style)this.Resources["DataPointStyle1"];
            mcChart_CustomSection.Series.Add(ss1);
          

But, it does not work.(The points are not plotted).

Is it possible to show image there(Images\customImage.png)?

Thanks.