My baby is also in the posterior position. I have looked into it a lot and have spoken to a few ladies who managed to turn their babies from posterior to anterior. Everyone suggested going on all fours, sitting forward so that your knees are lower than your pelvis and the others that have already been suggested. I've also heard that the baby will turn its back to where it's warmer so you can try putting a hot water bottle on your front while someone hold something cold on your back. Acupuncture works well too aparently (I am going to try that this week). As a last resort you can try the homeopathic remedy Pulsatilla (just check with your LMC first). A friend of mine who was at full term took a dose recommended by a naturopath and was told to go to the beach and crawl in the sand on all fours. It worked, he turned and she gave birth a few days later. Hope something works, I'm trying them all too. Good luck.