Im sure a few of you have noticed the amount of question's I've posted involving a transition to 2010 lately. I feel like I started this venture off on the wrong foot, so I tried searching and came up mostly empty handed. Does anyone know of a guide out there that's explain the steps needed to install an Exchange 2010 server into an existing 2003 environment where the users will be slowly migrated to the new server? Where the two will live together in harmony for a month or two? Possibly even something that mentions BES?