I bought a potty seat for Emma a while back - one that sits on top of the main seat. She has been carrying it around the house for a while, and Dora has had her turns with the seat. I've also sat Emma on it a couple of times just to get the feel.
She has started asking to go potty. I think most times she has already gone, but its a start. AND, she has gone a few times in the potty over the past few days.
So, I guess we are starting potty training. With the other two, I had the benefit that day care did most of the training for me, and the kids were around other kids their age who were learning, so this is a new environment for us. I guess I'll just get out the timer and start our "every 20 minute" trips to the bathroom!