Moving to Windows Vista x64

<Window x:Class="SmallWPF.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="SmallWPF" Height="339" Width="454" xmlns:my="clr-namespace:System;assembly=mscorlib">
    <Grid>
      <Border BorderBrush="White" BorderThickness="5"  HorizontalAlignment="Center" 
              VerticalAlignment="Top">
        <ListBox Width="200" Height="200" Name="listBox1" >
          <ListBoxItem>Hello,</ListBoxItem>
          <ListBoxItem IsSelected="True">how are you?</ListBoxItem>
          <ListBoxItem>This</ListBoxItem>
          <ListBoxItem>is</ListBoxItem>
          <ListBoxItem>a</ListBoxItem>
          <ListBoxItem>3D</ListBoxItem>
          <ListBoxItem>ListBox!</ListBoxItem>
      </ListBox>
        <Border.BitmapEffect>
          <BitmapEffectGroup>
            <DropShadowBitmapEffect Color="Black" 
                                    Direction="{Binding ElementName=MySlider4, Path=Value}" 
                                    ShadowDepth="{Binding ElementName=MySlider5, Path=Value}" 
                                    Softness="1" Opacity="0.5"/>
          </BitmapEffectGroup>
        </Border.BitmapEffect>
        <Border.RenderTransform>
          <TransformGroup>
            <SkewTransform CenterX="0" CenterY="0"
                         AngleX="{Binding ElementName=MySlider1, Path=Value}"
                         AngleY="{Binding ElementName=MySlider2, Path=Value}" />
            <RotateTransform Angle="{Binding ElementName=MySlider3, Path=Value}" />
          </TransformGroup>
        </Border.RenderTransform>
      </Border>
    <Slider Height="21" Margin="42,0,0,43" Name="MySlider1" VerticalAlignment="Bottom" 
            HorizontalAlignment="Left" Width="104" Minimum="0" Maximum="50"  />
    <Slider Height="21" Margin="184,0,158,43" Name="MySlider2" VerticalAlignment="Bottom"
            Width="104" Minimum="0" Maximum="50" />
    <Slider Height="21" Margin="0,0,33,43" Name="MySlider3" VerticalAlignment="Bottom" 
            HorizontalAlignment="Right" Width="104" Minimum="0" Maximum="50" />
    <Slider Height="21" Margin="42,0,0,15" Name="MySlider4" VerticalAlignment="Bottom"
            Width="104" Minimum="0" Maximum="200" HorizontalAlignment="Left" />
    <Slider Height="21" Margin="184,0,158,13" Name="MySlider5" VerticalAlignment="Bottom"  
            Width="104" Minimum="0" Maximum="100" />
  </Grid>
</Window>