Composing a newsgroup message is like writing an e‑mail message, but you're writing for a larger audience. Instead of sending the message to a small group of recipients, the message is posted to a public newsgroup and can be read by anyone who subscribes to that newsgroup.
Keep in mind that before you can post a message to a newsgroup, you must subscribe to that newsgroup. For more information, see Subscribe to a newsgroup.
Open Windows Mail by clicking the Start button , clicking All Programs, and then clicking Windows Mail.
In the Folders list, select the newsgroup you want to post a message to.
On the toolbar, click New Post.
Type the topic of your message in the Subject box. Windows Mail can't post a message that doesn't contain a subject.
Compose your message, and then click Send.
To send your message to multiple newsgroups on the same news server, click the icon next to Newsgroups in the message composition window. In the Pick Newsgroups dialog box, click one or more newsgroups from the list (hold down the CTRL key to select multiple newsgroups), and then click Add. You can choose from all newsgroups, or only those you subscribe to, by clicking Show only subscribed newsgroups.
You can only send a given message to more than one newsgroup at a time if all the newsgroups are on the same news server. To post a message to newsgroups on other news servers, create a separate message for each news server.
You can cancel a message you have posted by selecting the message, clicking the Message menu, and then selecting Cancel Message. Canceling a message does not remove it from a newsgroup reader's computer if that person retrieved the message before it was canceled. You can only cancel messages that you posted; you can't cancel another person's message.