Ron, Thanks for posting your information. It's very interesting. I hope somewhere along the way a researcher can be found to explore this. I have not had a chance to go to the links you posted but I will be doing that as time permitts.

To everyone else, sorry about not answering the many replies to this thred. They have been outstanding and I find myself reading more than answering. Rick, your right it's scary to see what a few Parkies with keyboards can do in just a few hours. I think I've learned more in the last 24 hours than I have in the last 10 years about PD. Keep up the good work guys!

GregD