if your dvd = debian-live-6.0.6-i386-lxde-desktop.iso
Root-terminal
# apt-get update
# apt-get install vlgothic
iceweasel
http://ajaxime.chasen.org/
you can write japanese characters.
Best wishes.
ちなみにdebian-live-6.0.6-i386-lxde-desktopから書き込みをしてみました.