XAML Markup that installs .NET3.0

<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
Margin='8px'>
<TextBlock
  Foreground='#17365D'
  Background='White'
  FontFamily='Cambria'><Bold>Windows Presentation Foundation</Bold> is installed!</TextBlock>
</Viewbox>