This applies when you are moving your Clientexec to a new server, but keeping the same domain name.
1) Make a backup of your current database on the old server.
2) Create a new blank database on the new server.
3) Import your backed up database to the new server.
4) Upload the CE files to the new server (make sure they are the same version).
5) Restore the old config.php
6) Ensure SupportPipe.php has 755 permissions.