Problem with a rss feed.

Hello all.This is probably simple but as i am new to this stuff i can't figure it out.I have a valid rss v2.0 feed but it tells me im missing an atom link.So this is the feed.http://www.groups.google.com/group/rec.games.pinball/feed/rss_v2_0_topics.xml If someone could tell me where an how to put this atom link in i would be thankful.LOL i don't know what an atom link looks like.Thanks



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