Game Translation

[ShiKage]

I am not sure where is best to put this but I am interested in learning the basics of trying to translate a PSX game. I'm not really very good with any languages but english but can muddle my way through enough of Japanese to try and at least put english items into menus.

Anyhow, I have read briefly somewhere this has something to do with editting the graphics files for the menus on the ISO of the game, in this case Super Robot Wars Alpha. Unfortunately, I don't know how to go about getting these files in a form that can be editted and then inserted back into the ISO, etc.. So I am wondering if anyone can point me in the right direction for this, or already has a translated version or ppf file.