ROM Hack need help with disgaea undubbing

[Aizan]

i need some help with understanding part 7 and 8 i dont get those 2 parts so enlighten me please >_<
also id like to know if i can use this same method to undub any game ?


It replaces all the English voices with Japanese voices. The characters will speak in Japanese, but the subtitles will remain in English.
Procedures:
1. Use the program dslazy.
2. Find the Japanese ROM and press unpack.
3. When unpacking is finished, rename the "NDS_UNPACK" directory to "japanese_NDS_UNPACK".
4. Delete the file "current.nds" from the dslazy folder.
5. Open up the English ROM, and click unpack.
6. After, navigated inside the japanese_NDS_UNPACK folder and into the "data" subdirectory.
7. Pick up the files above and copied them in the respective data directory inside NDS_UNPACK.
8. Afterwards, press pack and saved the new .nds file.

 

[Vuzrak]

6.5 Select the following files voice.dat, voice.dat.tbl, msgvo.dat, msgvo.dat.tbl.

Kinda but you need to know which file to replace in each game.