Most of the .exe and .dll files in winnt\system32 are backed up as part of
the SYSTEM OBJECT backup on Win2K.  It's all part of one big glob of files
that are backed up and restored together.  All the SYSTEM OBJECT files are
backed up every time, even though they have not changed  :>(

Try this:
Q FILESPACE nodename *

See if you have a filespace named SYSTEM OBJECT.  If you do, the file is
probably in there.

Try this query:

select * from backups where filespace_name='SYSTEM OBJECT' and
ll_name='FTP.EXE' and node_name='NNNNNNN'

(these are case-sensitive, make sure you type them as shown)