This might be too late for the original poster but might help someone else. What my SIL's pediatrician told her was once the little one was walking, take them to the potty with you when you go. If you can, get them to sit on the potty while you're on it. That way, when they're ready they know what their potty is for.
I didn't do this though, because she told me about it waaay too late :)
My oldest wasn't fully potty trained until he was almost four. Our pediatrician said please relax, you won't find a kindergartener with diapers on. He also said don't use "be a big boy" when you put on training pants or express that idea. The reason being that if they're a little older (3-4ish) and they get diarrhea, it would be so much easier to let them use pull ups but it would be an emotional blow if they associate pull-ups with being a baby. That did make sense to me so I did manage to avoid it.
My second showed all the signs of being ready but mom ignored them for a while. It took him no time at all to learn (a couple of weeks I think). He was 2 1/2. Dry bed in the morning and all. However, after our move to Austin, he's regressed. I'm going to let him sort that on his own, but I think insisting that he help clean up is making a little bit of an impression on him.