Do not install Exchange 2007 anything on the Unity server. The Unity server should only have Exchange 2003 management tools installed on it. Step 3 means to install the latest Exchange 2007 service pack on your partner server.
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...