Jim says he wants to see the address that the reply goes to. No problem. To the right of the From: add a To: field.
It displays either
a) Reply to Group => the address of the group as in email@example.com
b) Reply to Sender => the address of the sender of the post being replied to. (which in the case of an announcement only group could be the Reply-To provided by the mod/owner if they specified a custom Reply-To when forwarding an announcement)