Hello all, We are upgrading our NT 4 domain to AD this upcoming Monday. All is set and has been tested for a smooth transition. As you read, please realize that I am not asking how to perform the upgrade, but rather what your experiences have been and what you would do different if you had the chance to upgrade again. As the Exchange admin, I have taken several Exchange deployment classes but would like some real world feedback on Preparing AD design (creation of groups\OU's etc.) in preparation of migrating 5.5 to Exchange 2003. I have found a wealth of information on the web, but I have come to value everyone's opinion in this forum, as we are all knee deep in e-mail everyday. Can any of you recommend any trusted sources that will address Public Folder issues, Distribution List and Custom Recipient issues to watch out for during deployment? I am on a fact finding mission, and have been given the responsibility for designing our AD OU and Group structure (since it is key for Exchange 2003). After upgrading the domain next week, I would like to 'dress up' AD as best as possible so that we have a good footprint for Exchange. I am leaning towards creating OU's for North America countries that exist in our org (Canada, USA and Mexico) and then creating groups based on Location and Department names. The biggest worry I have is that our company LOVES to change department names. How will this negatively affect Exchange? What methods of AD design has worked well for you during implementation? Sorry for so many questions, but there are so many opinions and documents on the web that contradict each other. I look forward to any replies and discussions that this question may spur in the group. At least so that I can present arguments to any outside Contractors that we may bring in to assist in planning the move. Thanks, Chris Wall Sr. North America Exchange Administrator Global Knowledge Network