Our 2year/3month daughter is doing ok with it. She pees and occasionly will poop on the pot. We made a chart, with two sides, pee and poop. If she pees on the pot, she gets to pick a star. If she poops, she gets a NEMO sticker.
She is so young that we are not pushing anything. She still goes in her diaper too, and thats fine with us. We just introduced the pottty as another option, and she seems ok with it.
Try this:
http://www.amazon.com/gp/product/0764152327/002-8415651-1289655?v=glance&n=283155