Thanks to Camilla for forwarding the current address for all our PD friends. One of our SDS friends has heard of NAC and is interested. I believe we saw something posted here recently about a web site for info on NAC, where to buy it, cost, etc. If someone could pls forward the info again to us, it would be very much appreciated. I'm afraid it went into our "trash" which dumps every time we close off. Thanks again!! Jack and Joan Martin, Oshawa, Ontario, Canada