How to translate a nintendo ds rom?

Can anyone tell me how to translate a Nintendo DS ROM from Japanese --> English : (U) (E)???

[color=purple][b]Unpack it with DSLazy or DSBuff, find the text files (Can take you very long, with very long I mean 20 hours), open them with XML, and translate what you want. Translating will take you a few months without the graphics (Like the Yes/No buttons). You need basic hack skills for this.