Outlook should come incorporated with a newsreader (well, Outlook Express does, anyway, that's what I use). You just need to know if your ISP has a news server as well as mail server, and you need to know the address of the ISP's news server (usually something like news.yourisp.com, but it may differ).
Then you need to set up a news account, sort of like you set up a mail account.
Look into Outlook Help, search for "news", see what it comes up with. The Help sections can occasionally be quite useful. /forums/images/icons/smile.gif
Once you got your news account installed, you just need to search for the address Hypatia gave (rec.arts.sf.tv.babylon5.moderated) and subscribe.