I can tell you what works for me...
I had decided to use cloth diapers when my third child was born, and at the same time my second child turned two, so he was still in diapers, and I switched him as well. He HATED the sensation of pee (cloth doesn't wick moisture away like disposables) and he started whipping his diaper off the minute he peed. Or sometimes right before he peed.
It was messy, but we have hardwoods, so I just washed my floors.
We then bought a potty, and right away he was using that and keeping his diapers dry.
With my daughter, who is almost two, I've started taking her in the bathroom with me, when I have to pee. I put the potty next to the toilet, and she sits next to me and looks at books.
She is already VERY interested in her potty. And takes her diaper off to sit on it several times a day. (No pee yet though!) I'm just trying to get her comfortable with the idea, so she won't be stressed out or afraid of it...