My pleasure. One more tip - try switching mice from time to time. I used to use a MS mouse at home and a Razer mouse at the office to reduce strain - different shapes reduced problems. The Razer you control with your fingers, palm on the desk, while the MS mouse I had in my palm, moving my whole hand. Using both every day reduced strain :)
http://store.razerzone.com/store/razerusa/en_US/pd/productID...