title: How to convert a NSString to UTF-8 format string in iphone sdk?
body: <p>I have localization in my app(english,spanish,italian).The client sent me strings files but some characters are strange how do i correct them? i have figured out that the client used Mac OS Roman encoding how do i convert this to utf-8.
  for example Nürnberg
  is converted into N√ºrnberg when client send me now i want to reconvert it.</p>