David McCusker writes that he has bought a Microsoft Natural Keyboard to alleviate the problems with his hands and wrists. I've been using the type of keyboard at home and work for several months now as a precautionary measure and find them very comfortable to use. Perhaps more relevant to David's problem, my wife used to do a lot of typing at work (the real thing at around 70 wpm) and suffered RSI-type problems. She finds the Natural keyboard much easer on her hands. If she does much typing on a traditional keyboard her hands start playing up again.
Oh, I forgot to mention, you have to learn to touch type. The two or three fingered pecking skills you have developed over many years don't work on this layout.