title: Can't find System.ComponentModel.Composition with .NET Framework 4 installed
body: <p>i think this sounds like a stupid question. i am starting with <a href="http://caliburnmicro.codeplex.com/" rel="nofollow noreferrer">caliburn micro</a>: <a href="http://caliburnmicro.codeplex.com/wikipage?title=Customizing%20The%20Bootstrapper&amp;referringTitle=Documentation" rel="nofollow noreferrer">customizing the bootstraper</a>. i have .NET Framework 4 installed, VS2010. but when i try to add a <code>using</code>, there is intellisense that tells me i have System.ComponentModel.Design but no Composition or any of</p>
  
  <pre><code>using System.ComponentModel.Composition;
  using System.ComponentModel.Composition.Hosting;
  using System.ComponentModel.Composition.Primitives;
  </code></pre>
  
  <p>available. i tried to add a reference but cannot find System.ComponentModel in the list even</p>