I'm migrating from Exc 5.5 to 2K3. During the install for 2K3 it asks for my exchange 5.5 system account and it has the username already entered and greyed out to where I can't change it. This username is not my existing 5.5 service account but I can't change it. Any idea where this info is stored and how I can change it. I double checked everything in my exchange 5.5 setup to be sure that this invalid user wasn't in the configuration anywhere and I don't see it at all. Thanks for the help!!!