I noticed that atom feeds from blogger in Outlook 2007 appear to be broken. All posts (at least on my machine) show up with a date of 12/31/2006. This help file shows you how to get to an RSS feed, which works correctly in Outlook. Note that the trick does not work with the old style blog URL (http://example.blogspot.com/atom.xml), but only with the new style URL available only with the new blogger (http://example.blogspot.com/feeds/posts/full?alt=rss).
This post helped me figure out the new URL. Unfortunately, all I've seen in blogger help is how to embed the URL in your template rather than a help file telling you what the URL actually is. For reference, here are the URLs for this blog, which I'll add to the template shortly:
Atom 1.0: http://emilsblog.lerch.org/feeds/posts/full
RSS 2.0: http://emilsblog.lerch.org/feeds/posts/full?alt=rss