ROM Hack Rune Factory Undub

[FlameTakuya]

Okay, so Iv'e been searching around the old topics, and found out that undubbing Rune Factory isn't as easy as switching the .sdat files... (Which I've already tried and failed)

What's the correct way to do it? And otherwise, is there a patch around? (I saw a topic for it but it was made back in '07, dead now.)