Code:
raw 433:*Nickname is already in use*: { 
  .timer 1 1 nickserv ghost NiGHtOwL YOUR_PASSWORD_HERE
}
on *:notice:*Your ghost has been * killed*:?:{
  if ($nick == nickserv && $me != NiGHtOwL) {
    .nick NiGHtOwL
    .timer 1 2 nickserv identify YOUR_PASSWORD_HERE
  }
}


ok this i have tested now it does kill the nick thru services ..... the only other section ive not tested was the ghost reply message thru services ( i just used the one codemastr left )

if this fails to change your nickname for u then u need to modify this line of the above code:

on *:notice:*SERVICES GHOSTED NICK MESSAGE HERE*:*:{

since your services is using german language files id assume the above code wont work and u will have to translate it ...... i dont know german sorry for that

hopefully this will assit u further