One of the secretaries in our office had to have surgery for carpal tunnel. The company bought her one of those new fangled ergonomic keyboards and she swore by it. Loved it.

I think something can be said for checking into a different mouse too, as has already been suggested. My son just got one that you operate by rolling a disk with your index finger rather than punching down on top of the mouse. It also has a control on either side of the mouse but I've forgotten the purpose for those. I just took a look at it last weekend and tried it awhile. It really relieved the pressure one feels sometimes form using a conventional mouse.

DougR