[Mailman-Users] replying to old thread

[Jim Tay]

> > If you've deleted all previous emails to a thread, is there some
> > way you can continue a thread?
>
> You need to put
> In-Reply-To: <message-id-of-the-mail-you-want-to-answer-to>
> into the headers of the new mail.

I'm using Netscape Messenger as my mail client and I'm not sure how to
add an "In-Reply-To" field to the header.  Also, how does one find out
what the message id of the mail is?

I'm a bit of a newbie at these things, so please forgive me if these are
annoying questions....

Thanks,
Jim