The configuration data is stored in a single SQL Server Compact file named config.sdf. This file is stored in a subdirectory of the "ProgramData" or "All Users" data directory.
On Vista/2008 and later:
C:\ProgramData\Enterprise Distributed Technologies\Complete FTP\config.sdf
On Windows XP/2003 and earlier:
C:\Documents and Settings\All Users\Application Data\Enterprise Distributed Technologies\Complete FTP\config.sdf
Two other ways to locate the file:
1. Open Windows Explorer and type "%ALLUSERSPROFILE%\Enterprise Distributed Technologies\Complete FTP". You should now see config.sdf in the file-list.
2. From the Windows Start menu open "CompleteFTP" and then "Log Files". This opens the Logs directory in Windows Explorer. Go up one directory to the directory where config.sdf is located.