upload it to your shell and type ./vftpd -i `hostname` -p 2121 -l 0
now you can use your.shell.com as server address in your FXP clients, 
if they do not support this type of gateway, and specify the hostname
and the port you want to connect after the user name suffixed by a @
(eg: USER anonymous@ftp.cdrom.com:21, PASS email)
