Where to buy Kodansha Kanji Learner's Dictionary CD-ROM

[Tourne]

I'm in Tokyo now until Sunday (26 Oct), and was hoping to buy the Kodansha Kanji Learner's Dictionary CD-ROM to load on my Casio XD GP9700, but I haven't been able to find it. I found the SD card version in Sakuraya, but that is no good as the GP9700 only has a micro-SD slot, and they told me there is no micro-SD version. Can anyone suggest a store where I might be able to get the CD version?

[skrba]

I have bought mine on Amazon but it takes 2-3 days to deliver, so the only idea is to try at some big book stores like Junkudo or electronics stores where they have a lot of dictionaries.

[Tourne]

I found the CD at a shop in Akihabara for about 4,000 yen, which I'm happy with.