A: 

You cant have the same assembly referenced twice in one program, even if they are different version, it's just the way visual studio works. You need to reconstruct and recompile the code that references the older assemblies using the new versions of the assembly. This can be done via a reflector, and is relatively easy if you know what you are doing.

Richard J. Ross III
I'm not trying to refer to the old assemblies, and I dont want visual studio to add a reference to it. I want it to blindly add it as content that will be deployed to the build directory.
djmc
sorry, I noticed someone changed my url to an embedded image. It was probably hard to tell what I was trying to do in my project. I made the image a hyperlink so ppl can view it in a larger size.
djmc