Just a quick question... I have Exchange 2000 running on a 2000 box and I have a new 2003 box that I'm going to install Exchange 2003 on. Since this is my only email server it's kind of hard to take down due to users getting email and all. I have another server (2000) which is my domain controller. Is it safe to run the adprep /forestprep and adprep /domainprep utilities on the domain controller while my current Exchange server is on and running or should I come in after hours, shut exchange down and then run the adprep utilities? Thanks in advance, James