Okay - I know that this topic has been out there and left numerous times. I apologize for not paying attention, but hey - I thought that our upgrade was a long way away. Guess what - now my boss wants us to upgrade sooner than later. We have a 2000 Server with Exchange 5.5 loaded in a NT4.0 domain. We want to put Exchange 2003 on this 2000 Server in place of the existing 5.5 exchange. Can someone point me to some good resources to assist in this deployment? Any 'watch out for's?