Dun worry, you don't have to have japanese, just upload the PCD/PGT onto Pokesav, press OK and it will work. Even though it's not in japanese characters on Pokesav, it will be on the game when you receive it. However, if you want to see its name on japanese on Pokesav, you will need to install Japanese Text. There was a thread about how to install JAP Text before, not sure where it is but try searching for it.