You can add a feature receiver and add the webpart if it not alreay exists in stead of adding the webpart in XML. What do you mean by tag?
Check out this blog entry from Waldek Mastykarz. It has the C# code below that should be similar to what you are looking for.
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.