Minimum files are the following packages.
Kanji Dic 'Henkan' tapbar modules or 'nJIM Palette' . If you use 'Henkan' Tapbar modules, you must install TapBar . This sentence means that 'I am studying Japanese'. If you don't know this, please study Japanese grammar first. If you use only Hiragana or Katakana, not Kanji, now you can use those on your Newton.