{hidden_vars}
 {title}
 {error}
 {lang_Windows_Popup_Configuration}
 {lang_Netbios_command}:
  Example: /bin/echo '[MESSAGE]' | /usr/bin/smbclient -M computer-[4] -I [IP] -U '[SENDER]'

placeholders:
[MESSAGE] is the notification message itself
[1] - [4] are the IP-Octets of the windows machine to notify
[IP] is the IP-Adress of the windows machine to notify
[SENDER] is the sender of the netbios message configured above
Note: the webserver-user needs execute rights for this command
Don't forget to enclose placeholders containig whitespaces with apostrophes