Various Italian translators have gotten together to form TranslationRL, a team of six people that translate Japanese DS games into English. They are currently working on the popular Jump Superstars title and even have a beta up for download. These translations are applied by patching ROM images of the games. This site dose not distribute the ROMs, but graciously supplies a ROM patcher.
Their website and translations are both in English and Italian, so don’t be a stranger and stop by.