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


try something like that i added the delay into it thru timers cause my script was fireing them too fast before the server actually allowed me to change nicks .... hopefully that does what your want ...... if it doesnt then u may need to do a /debug @debug and find thecorrect server raw numeric for the nicknam already in use message