I'm getting ready to upgrade school from windows 2000 pdc to windows 2003/exchange 2007. I've taken the windows 2003 machine and added it to domain as a domain controller and it is replicating active directory. I have exchange 2007 and trying to install but it tells me it doesn't get along with a windows 2000 member server in domain. What is the best way to proceed to import the exchange 2000 mailstore? Also I receive a notice that exchange 2007 is not made to be run in production on a 32bit platform. Is this correct? Why would Microsoft offer a 32bit trial download if its not made for production use?