OT - Chocolate cupcake recipe?

I was all set to make chocolate cupcakes, but my American cookbook
doesn't have a recipe for them! How can this be? It has various
recipes for muffins... which leads me to wonder: What is the
difference between a muffin and a cupcake?
Anyway, I know many of you love to bake, so can someone help me out
and post their favorite Chocolate Cupcake Recipe?
Meanwhile, I'll make a pound cake instead, in a half chocolate/half
vanilla style.



-- Jo in Scotland