http://demazter.wordpress.com/2010/04/29/migrate-small-business-server-2003-to-exchange-2010-and-windows-2008-r2/
http://www.channelprosmb.com/blog/entry/15094/Migration-step-twenty-Moving-Public-Folders/ + http://msmvps.com/blogs/andersonpatricio/archive/2007/10/30/moving-all-replicas-from-an-exchange-server-2003-to-an-exchange-server-2007.aspx