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An oldie but goodie.
Topics BlocksThere have been many incarnations of this amd some recent article management modules feature this kind of built in. But its still a useful module, IMO. Very very simple to use, you just select the topic id (from the news cat.) and it pulls the latest from it...just like a "recent list"
If you want full article summary..you might just keep messing wiht latest news mod. A lot to experiment and configure within there, still.
For rss, I'd go with XHLD
For headlines its useful you can install more than once, easily rename and manage, and all templates are easily modified. The trick with this one is familiarizing your self with its varied block configs.
We use them on our site (in profile) to much success and its not even the latest.
Check here for most current version at the authors site
At PEAKHope that helps at least get you going.