I do not think that you need to go through all of this. EF 4.1 Code First uses a lot of convention over configuration and via this, the Id property of an entity is configured as the primary key. So by implementing the IEntity interface on your entities you are setting them up with the Id as the primary key.
It looks like these configurations has some problem with interface. It works if you change IEntity to EntityBase.
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.