In regards to Tai Chi there is an excellent article about Tai Chi and the PDP on http://www.cloudnet.com/~mandms/personals.html#anchor400728 I am taking a Tai Chi class and the instructor has given us numerous addresses for various videos, books etc. I'm sure if you were to contact any Tai Chi instructor they would be able to help. We also have found that the pill box with the timer is very helpful. Even though Don cannot always hear the buzzer it at least tells him when it is due or if he is overdue. When we were at the Mayo Clinic last October we asked about the patches. The doctor said that the "so called test" was done on 12 people and couldn't understand how it got published. According to him the patch isn't even on any agenda. Nancy B cg Don 63/12.