Anyone else clicking on this because of their wrist/hand/arm pain, I would highly recommend

http://www.amazon.com/Conquering-Carpal-Syndrome-Repetitive-...

which is a series of very simple exercises.

I have found more relief in daily stretches outlined in the above book then the keyboards I use: kinesis advantage, placed on my lap, at work (8 hours a day) and Truly Ergonomic at home on weekends