File.userDirectory.resolvePath("Local Settings/Application Data")

......

private function clickHandler(event:Event):void 

{

 try

 {

  _xmlToSave.browseForSave (" ");

 }

 catch(error:Error)

 {

 }

 _xmlToSave.addEventListener(Event.SELECT, saveData);

}

 

private function saveData(event:Event):void 

{

 var newFile:File = File.documentsDirectory.resolvePath(event.target.nativePath + '.xml');

 var stream:FileStream = new FileStream();

 

 stream.open(newFile, FileMode.WRITE);

 stream.writeMultiByte (_DataStorage.fileData, "UTF-8");

 stream.close();

 

 dispatchEvent(new Event(FILESAVED));

}

......

 var file:File = event.target as File;

 var path:String = (file.extention=="xml")? file.nativePath : file.nativePath+'.xml';

 var newFile:File = File.documentsDirectory.resolvePath(path);