i-phone language input?

My wife is Japanese and after playing with an i-touch I was facinated that it was the first handheld sold in the US, besides the Nintendo DS, that had the option of using using a Japanese keyboard when emailing online.

I was amazed to find out that the i-phone does not have this option. I can understand that sms mesaging in Japanese can't work form japan to US because Japan is on a higher CDMA frequency, but I can't understand why they didn't add it for web use.

Is there anyway to update this?

Thanks,

CFS

 

Makes sense.