My uncle has proposed a project for me. He wants a common letter typed up, in which he can change the customers name whenever he wants. For example; the body of the letter would be the same, but the head could be changed easily. Now I don't see a problem with this, except he has like 400 customers and wants them all printed up. What would be the easiest way to go about this? I am meeting him in a couple hours, any help would be greatly appreciated. Thanks in advance!