You can backup the one CS2 and restore the backup on the other. It might be a good idea to have the same configuration on both CS2's, I guess it depends on what you want with your setup.

I have several backups with different configurations that I use from time to time. E.g. I have my exhibition layout on a backup, so I can restore it whenever I go to exhibitions. When the exhibition layout is packed up in storage, I have a "clean CS2" backup that I use as a sort of "custom factory reset". That way I can "reset" the CS2 when I come home, and use the CS2 for other stuff in the time between exhibitions.

I also use the clean backup to help others that have messed something up. It is much easier.