title: How to reference .NET 4.0 assembly within .NET 3.5 projects
body: <p>I would like to do some Office Interop stuff using .NET 4.0, but developing the rest of my project using VS2008 and .NET3.5.</p>
  
  <p>How can I now use the functionality from the .NET 4.0 assembly within my other solution. Loading CLR 4.0 assemblies into a 2.0 AppDomain won't work, will it?</p>