Copying the folder and the file did not work, but I found out, that the EB savegames and the missing "preferences"-textfile are in another folder

Rome TW and EB are in C:\Program Files\Activision\Rome - Total War

The EB savegames and the preferences-file are in C:\Users\*Username*\AppData\Local\VirtualStore\Program Files\Activision\Rome - Total War


well, however. It works now.

Thank you all very much