R.Z.
I got my son potty trained in about 2 weeks. (even at night) It took a little help, but we did it. I just took the diapers away all together. and just put him on the potty every 2 hrs or so. I also heard, if you put one of his favorite toys on the potty, and when he goes, thats helps too.
My daughter on the other hand, she was a little harder... it took me nearly 2 mths. and she did the same thing, she would hide, i just had to keep an eye on her. and if i noticed she would look like she was pooping, i would just take her.