How can I easily tell if my Excel 2007 code will work in earlier Excel versions?

As a coincidence, I came across this which might help: http://blogs.msdn.com/b/eric_carter/archive/2009/03/19/object-model-changes-for-developers-between-excel-2003-and-excel-2007.aspx.

No, not really and I doubt that there is a fully compiled list of object changes.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.