Hi!
... Sorry to let you wait that long, but school started again, so I'm a bit busy
You have to configure im-ja first by running "im-ja-conf"
Configure, then start a gtk2 program and im-ja should work (right click->input-method->japanese)
If it's not working anyway, reinstall the im-ja package. .. If it still isn't working, contact me with PM or zabelj@gmail.com
Normally, it should work the easy way (ipkg install im-ja)
grusz, jabbath