K.B.
N.,
The same thing happened to my son. After much research on the subject most places said not to be upset or do anything negatitive as a response. Although there where not many recomdations that helped us either. My mom told me to try this when we where first potty training and I hated the idea, but it works!! I give them M & M's. I give them one for pee-pee and two for poop. I make them tell me the color and count them, too, so that we are learning, too. I no longer fight with them when I ask them to go, because I simply say, "OK, no M&M's then." They then make a B-line to the bathroom. It has taken so much stress of the situtation. Now the kids forget to get the M&M most of the time.
Good luck!