Adobe CS4 and InDesign CS4 japanese to english

Hello!

I bought the creative suite CS4 in 2010 while working in Japan. From there, it was not possible to get a suite in English. I found then some tricks on how to change the language back to english for photoshop and illustrator. I have been reinstalling now and then this program in my different desktop or laptop, but obviously not so often. I manage to reinstalled Photoshop in english in my new laptop, but I can't find a way for illustrator (half english half japanese) and indesign. Does anyone can help me out?

ps: i am not going to buy a new version of the suite as I am happy with CS4. I only use this software for basic things such as making figures for papers or preparing figures for my classes.

many thanks