Eugene Woodbury is translating Tonan no Tsubasa under the title "The Wings of Dreams". The owner of the Ranka - Twelve Kingdoms fansite had also been translating the book infrequently over here.
Eugene Woodbury's translation is available HERE. He updates with about one chapter every Thursday (this week, he's just gotten one chapter past the point where the owner of Ranka stopped updating).
Happy reading everyone!