William Lurie wrote:

User-Agent: Thunderbird 2.0.0.24 (Windows/20100228)

I still have not solved the mystery of how to simply 'reply' to a
message posted here. That's why I'm unfortunately starting a new
thread......not even knowing if it will post.

Select the post to which you wish to reply. Hit the Reply button in the
toolbar. Do NOT click the "Write" button to reply. Write starts a new
thread in newsgroups just like it creates a new e-mail.