RSS feeds send you notifications (similar to emails) when a page has been updated with new information.
Such as BBC news etc.
Each individual page can have a separate feed, so the link above is for Kitz main page showing new or/and updated information for all the pages/posts.
However, if this is not what you want you could just select a feed for a specific page, for argument sake the Windows page, so you would be notified of any new content only to that section of the forum, but not to any of the other sections.
To receive updates a small program (of which there are quite a few) is required.
Personally I use a program called "FeedReader 3"
To download or see more info:
http://www.feedreader.com/?fromfrWarning - while you were typing 4 new replies have been posted. You may wish to review your post.