I second doing anything but surgery; a coworker of mine had 2 ct surgeries on the same wrist this summer and is out now because of another surgery to correct nerve damage from the first 2. Many CT surgeries have to be re-done because they don't really correct the problem.
About 70% of Carpal Tunnel symptoms are because of too tight muscles in the arms, shoulders and even the neck that squeeze the nerves and blood vessels, impeding the flow of blood and oxygen to you hands and fingers. Acupuncture works very well, so does therapeutic massage and both cost much less than surgery, though insurance companies probably won't pay for it. Massage your lower arms yourself especially up near the elbow; paraffin dips can help relax the muscles. Then do stretches to loosen up the contracted muscle. Please avoid the surgery, it can cause more harm than good.