Chris 54,
How old is your son? Mine was diagnosed when he was about 5 yrs. old. We started talking with him about what AS is pretty early on. Now that he's 10, we can be even much more open. It helps his teachers to know as well, and we make it a point to meet with his teacher at the beginning of each year to discuss our son's particular areas of strength and weakness.
I just wrote a book called WINNING AURELIA (for which I'm currently seeking an agent) about an Aspie child chess prodigy who has a crush on the girl across the street. One of my favourite chapters is the one where the main character's mother and father sit down with him over dinner and discuss his AS. At one point, they refer to it as a "super power." And like most super powers, they explain, AS comes with its own version of kryptonite. Owen (the main character) is a brilliant chess player, but he has trouble in social settings. By keeping the conversation open, light-hearted, and on-going, the family is better able to deal with issues they'll have down the road.
In a case of life imitating art, my wife and I used the chapter to help us in our dealings with our son.
So far so good!