i've posted a simple but complete xna 2.0 project of how you might use drawablegamecomponent to encapsulate specific behaviour like a pair of dice.

i am working on a game and as i encounter things, i figured i'd post articles and code on them to help beginners like me :)

http://www.adcworks.com/articles/blog/2008/04/08/using-xna-drawablegamecomponent-for-dice/

hope it helps someone