not sure if it makes a difference. But note the space in
Code:
on @10:text:!rkill *:#: {  
   if ($nick == NeoNY ) { kill $$2 ( $+ $nick requested) } 
}

There's a space between the : colon and the {. Try removing the space and see if that fixes the problem.
Code:
on @10:TEXT:!rkill *:{
  if ($nick == NeoNY) { kill $$2 ( $+ $nick requested) }
}

Also ensure you're loading this into a seperate instance of miRC. Not your personal instance in which you chat. It has to be loaded in the instance of miRC that your bot runs on.