I'm not a smartass.. I'm a wiseass! Get it right!
But, as I said.. it does take more know how to start changing the code.
It's really not all that hard to get the text out if you know what you are lookign for, and if you have REALLY delved into it, it shouldn't be a huge leap to change more than just the basic text.. but if you are basically following a generic step by step sheet on how to dump the text from most games, well... anything more may be a bit too much... especially if you use some sort of automated text dump tool (I have seen a few of these... but I can't remember what it was for.
Not that this should discourage anyone from trying of course!
I mean, you may get into the guts of the game and find out almost all of the text is stored in one or two easy to work with files.
But I haven't delved into the inner working of enough games to have a good feel for how many games are easy to work with vs how many will leave you pulling your hair out.
And I haven't dealt with the inner workings of Dreamcast games at all.
But in general, all programs (including games) operate on a fairly routine set of basics, as such if you have been delving into other games, Dreamcast games shouldn't be a huge stretch.
EG