Welcome to NT, Marcia!

The link to our Parkinson's forum is:
http://neurotalk.psychcentral.com/forum34.html

They're a large and friendly group and I know that they'll make you feel right at home.

If (and that's a big if for we brain damaged folks) I'm understanding properly your question about responding to threads, just go to the last post in the thread, press "reply', type your message in the space provided and then press "submit reply."

Cheers