Windows SBS 2008 Active Directory Group Converter
Ooooh, I wish I had this tool a few months ago, I had been doing it manually.
An essential for any SBS installer out there!
http://blogs.technet.com/sbs/archive/2009/09/02/why-are-some-of-my-groups-not-displaying-in-the-sbs-console-post-has-been-updated.aspx