I downloaded (from eOpen)and installed Exchange 2007in March. Today I ran the Exchange Server Best Practice Analyzer Tool and received the two following errors: "Exchange Server '12' Active Directory schema extension found" and "Exchange Server '12' is installed". The description under each error states "This is not supported in production". Did I install the wrong product? I know it is the 64-bit version that I installed. Will I need to uninstall Exchange and re-install from a new download? Is un-installing possible without interferring with my current Exchange 2000 environment?

Problem solved. It appears I was using the wrong version of the analyzer. I downloaded the version from the Microsoft website, which is not updated for Exchange 2007. I ran the version in the Exchange 2007 tool kit with no errors.