Change session language?

I guess this is as good of a place/time as any to ask. Is there a painless way to change the KDE Session language. With Redhat, you chose it before the session started, but I don't see such a way in SuSE. Someone is coming to cover me next week, and I run everything in Japanese at the moment as I don't have time to tweak it to run only XXXXX in Japanese. Of course, as the person coming to cover me is from the states, and has never been to Japan, I'm going to guess he'll have no clue how to read any of the Japanese. :) Paul