One thing to also consider is working the "extensor" muscles of the forearm which line up with the outside of the elbow. A cheap way to do this (borrowing from minor league baseball pitchers who usually don't have much money) is to take a thick rubber band and place it around your fingers loosely. Then slowly expand your fingers as far as they can go and feel the resistance of the rubber band work the back side of your forearm. You also can do this with a specially type of "silly putty" which is used by physical therapists to help with hand injury rehabiliation.
If nothing else, it is free (except for the cost of a thick rubber band!) and should lessen the intensity of any forearm/wrist pain you may experience. Do it a few times for each hand while sitting in front of the computer or TV and you should be fine.
Hope this helps you as you follow the other recommendations on this post.