Japanese input on an English installation of Kubuntu 8.04.1

[Lisi Reisz]

This is a cross posting, for which I apologise: but the problem has shifted 
rather and probably more correctly now belongs here.

I am following (or rather, trying to follow) the instructions on 
<https://help.ubuntu.com/community/SCIM/Kubuntu> to enable Japanese text 
input on my granddaughter's laptop.  It has a fresh install of Kubuntu 
8.04.1:

<quote>
For users utilizing different default and input languages (e.g. Chinese input 
for an English Desktop). Open up Konsole and type: 
mkdir ~/.xinput.d
cp /etc/X11/xinit/xinput.d/scim-pinyin ~/.xinput.d/default
</quote>

Pinyin obviously needs appropriately changing, but the contents of the xinit.d 
directory are:

user at localhost:/etc/X11/xinit/xinput.d$ ls
all_ALL  default-xim  ko_KR  scim         scim-immodule  th_TH   zh_CN  zh_SG
default  ja_JP        none   scim-bridge  skim           th-xim  zh_HK  zh_TW

Several are obviously wrong (e.g. th_TH, which is Thai), but it is less 
obvious which I must copy.  ja_JP is obviously Japanese, but is of the wrong 
format.  scim-immodule _could_ be right I suppose, but again doesn't seem to 
be the same thing.  So how do I interpret this instruction when I am setting 
up Japanese (ideally both Kana and Kanji)?

TIA
Lisi