Not sure but I think you have to do it by the thread. Although you can do it wholesale in your CP by selceting all, also there is a drop down menu in the reply to post screen with those options. Just select there when you first post in a thread.
Cool Phil B, I'd never seen that. I usually just hunt and peck my notifications. It's kind of fun to get a notification from some necro thread that a noob found. You don't miss their perspective as it can be enlightening to revisit an old topic sans the taint of the emotion or ideas you had at the time. Kind of like rereading a book years later.:smile: