SFTP

Many ISP no only support SFTP due to the open, unsecure nature of standard FTP
As Cumulus does not currently support SFTP an external SFTP application must be used

WINSCP can be used
Looking at http://winscp.net/eng/docs/script_upload_single_file, winSCP can be used to script SFTP
You have run it by hand once, to allow the SSH key to be trusted, the it works on it's own

The following script

option batch abort
option confirm off
open User:pass@server
put "localpath\realtime.txt" /remotepath
exit

works well

changing User:pass@server to your username , password and server name combination
changing localpath\realtime.txt to the local path on you PC
changing /remotepath to the remote path on the web server (as seen when you SFTP to the web site)