I am upgrading a Unity system (unified communications with Exchange 2003) that was set up by someone else from 4.x to 5.0. I have the login account and password for the OS (windows administrator), and I also have the account for the Unity web administration. Other than that, I do not know any other accounts or passwords. There is someone else that administrates the Exchange side of the configuration. Do you know if I will encounter any problems with the upgrade, or a way for me to check the other possible accounts used for the Unity Installation?