how can i do so.

my view:

<ScrollViewer x:Name="scroller" >

    <ListBox x:Name="lstRemarks" ItemsSource="{Binding Remarks}" ItemTemplate="{StaticResource RemarkListItem}" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Disabled" SelectedIndex="{Binding RemarkSelectedIndex, FallbackValue=-1, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" ItemContainerStyle="{StaticResource ListBoxItemStyleTest1}" />

</ScrollViewer>

I am trying to synchronize the "scroll into view" and the selected item, how can i do so.