How to convert a VS 2010 solution back to 2008

Question

We started using VS 2010 and were very happy with it, so we converted our project into a 2010 solution (still .net 3.5) and continued our development in 2010. However, we ar

Answer 1

This question

How does one convert a Visual Studio .NET 2008 solution to Visual Studio .NET 2005?

might also be applicable for converting from 2010 back to 2008.