If you're running a recent version of Thunderbird, you might want to have a look at our articles covering Thunderbird 1.5.
I've got a lot of questions about when/if Thunderbird will have a newsgroup option, the answer is simple, it's already there. :) In this article i will try to show you how to set up such an account.
First, go Tools > Account Settings > Add Account..., and you will get this window:

Choose "Newsgroup" and press "Finish"

Fill in your e-mail address and the name you want displayed, when this is done press "next".

Now you need to fill in the news server, now I don't know which one you want to use for this account, however, I'm going to use "news.mozilla.org".

Name this newsgroup, choose whatever you like, I'm going to use "news.mozilla.org" for this example.

Check your input, verify it by pressing "Finish". :)

You should now have a new folder under Local folders named "news.mozilla.org", highlight and rightclick on the folder and choose "subscribe". Now it's really up to you what you want. :) Double click, or highlight and press "Subscribe" to activate.

Adjust and choose what suits you. Ready to go. :) Enjoy.
This is the eight in a series of articles about Thunderbird, if you have Thunderbird related topics you'd like to see covered here, let us know. Comments on this article, thumbs up or flames, can be sent to articles@nidelven-it.no. If you need help using Thunderbird, we recommend using the Thunderbird forums.
If you're running a recent version of Thunderbird, you might want to have a look at our articles covering Thunderbird 1.5.
If you find these articles useful, you might also want to check out the introduction to Firefox, introduction to Open Office, Plone or the introduction to Gaim. We're always looking for more translators.