Does anyone know of a way I can add the addresses of several email messages to the Address Book at once? I have a sub-folder in my Inbox with over a hundred emails in it. I want to add the all the addresses into the Address Book and so I can create a new group.

Right now, I am right-clicking each message and choosing "Add to Address Book." When I've added 25 or 30, I open the Address Book and scroll through my 1400 contacts to find the new ones and add them to the group.

Tedious at best.
Thanks for any suggestions you can offer.