I was going to suggest an ergonomic keyboard. I have a Belkin that is a wonderful position, but it's a piece of bleep as far as the keys busting and sticking easily.

After years with no problems, my wrists and elbows were in pain after just a few minutes of typing last year. I haven't had a problem since switching from the standard boards that come with computers.

Sounds like with your set up that it wouldn't work.