Use DataGridTemplateColumn with TextBox and perform manual validation of item after you add it. See my question it is very related: Silverlight DataGrid validation show validation error for all objects|properties.
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.