Thanks very much. I'll look into the Kinesis keyboard. I have a Microsoft Natural Ergonomic Keyboard 4000 connected to my MacBook Pro right now, but the design of the Kinesis looks interesting. My non-mouse hand (left) is the issue, but perhaps I will think of switching to a trackball as a preventative measure for my right hand. Fiftieth B'day coming up next month - don't get old! (actually, it's not that bad - yet).
Getting old is definitely the worst option except for not getting old, of course ;)
Just to be definitive, I suggested the kinesis Advantage2. It should help with your non-mouse hand. There are plenty of reviews of people who claim it saved their careers from RSI.
Good luck! I’ve not had any rsi pain since switching to the advantage plus a trackball. I hope it works similarly for you!