Easiest way to save a Visual C# 2008 as a 2005 project?

This was not a big issues until this course I am currently in, basic GUI.  Before I'd just make a new project at school on the 2005 version and eidt & copy the code from my 2008 .cs classes code into the 2005 classes.  Now that we have all kinds of other stuff going on like pictures in the Resources.resx and  stuff, I'm not sure I am going to be able to do the same thing.

Please tell me there is an easier way to save my 2008 project as a 2005??  I have tried the save options and have not seen much.

THANKS!!!

Erik