I think its just spinningbabies.com - have to dash out for the kinder run now but I am sure you will find it.

I had bad sacroiliac probs with Marisa, I was prescribed panadeine forte for when it got bad, but I found I had no back problems in labour at all. It's not all about standing up, but just making sure you are sitting in the right possie even, with your bum above your knees (no slouching). You can acheive this sitting on the edge of a seat, sitting backwards on a chair, or sitting on a pillow, so your bum/hips is higher than your knees... also walking and stairs is helpful for moving your pelvis, gentle lunges, etc... even on a small stool. Its going to help you alot. Not a good idea to do any deep squats until you know bubby is in a great possie/towards the end when pushing.