Ok so a couple of months ago I was posting sadly on the NCSS thread - baby waking every couple of hours, fed to sleep, I couldn't leave her. I am happy to report the last three nights she has slept ALL NIGHT, no more night feeds, in her own cot, going down in her cot awake and NAPPING IN HER COT!
So if you are, as I was, despairing, I can tell you this was the best money I have ever spent. :)