OK, I am guessing here cos I dont know the App, but try
FTP Account : Anything you want, probably what these settings will be known as within the App. e.g. NTLFTP
FTP address : upload.ntlworld.com ( or
ftp://upload.ntlworld.com )
Username : your username
Password : password ( btw, some people find that this is always the original one you setup, even if you have change it for email etc )
Folder : should be able to leave this blank, if not try . ( ie a full stop )