SIlverlight Report Viewer Toolbar - add Buttons

[Manuel]

Hello,

I update the default style of the Silverlight Report Viewer.
I Added three new Buttons to the Toolbar.

<telerik:RadButton Command="{Binding ZoomInCommand}" Margin="0,2" Padding="2">
        <Image Width="16" Height="16"  Source="{StaticResource ZoomIn}" />
</telerik:RadButton>
 
<telerik:RadButton Command="{Binding ZoomOutCommand}" Margin="0,2" Padding="2">
        <Image Width="16" Height="16"  Source="{StaticResource ZoomOut}" />
</telerik:RadButton>
 
<telerikNavigation:RadToolBarSeparator />
 
<telerik:RadButton Command="{Binding CloseCommand}" Margin="0,2" Padding="2">
	<Image Width="16" Height="16" Source="{StaticResource Close}" />				
</telerik:RadButton>

Unfortunately I am not sure how the create a new Property to bind this new command. (e.g.CloseCommand).
Basically I like to bind this command the my ViewModel.

How can I do this?

Thanks,
Manuel