Great news! I'm really happy about the first non-US English version. I wish you all the best with your efforts.
But I also need to mention that it's not nearly done yet and the texts keep changing. I'm not prepared to keep a detailed log on it, so you will need to use WinMerge or a similar program to check for differences in subsequent versions.
EDIT: I also modified your file, as it was still coded as US English. Please work on this version and keep the same filename (you can keep both .rul files in the mod, they won't conflict).