A: 

looks like the image didn't work, here's the link

http://www.pic-upload.de/23.04.09/juv56l.png

You should edit this into your question
Pondidum
+3  A: 

You could just re-style the WPF TabControl to look like that. It's not very hard, just setting the Background with a nice LinearGradientBrush could get you very close to that.

Here's a (crappy colors) example:

<ToolBar>
   <ToolBar.Background>
      <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
         <GradientStop Color="White" Offset=".1" />
         <GradientStop Color="LightBlue" Offset=".3" />
         <GradientStop Color="LightSteelBlue" Offset=".8" />
      </LinearGradientBrush>
   </ToolBar.Background>
</ToolBar>

Even better if you put it in a style.

gcores