L.L.
I used them with my DD.. they were ok, but I much preferred Imse Vimse training pants. They are more expensive, but my DD liked them better. They also have an outer layer that "helps" prevent a small accident from leaking through right away. Also, the Gerbers had a shape that my daughter always said felt funny when I first put them on her. I know ebay had the Imse Vimse if you want to try them... El Camino Hospital in Mt View also sold them in the Mothers Connection store.
For my daughter, I told her that she needed to try going potty when she first woke up, every time before we left the house, before meals, and before a nap or bed. Once she knew the routine, she caught on quickly. By the time she was 22 months, she was dry in the morning and I made it a "race" to the potty so she would have fun beating momma there.
Good luck G.. Just remember to have a sense of humor ... the less stress she senses about it, the more she'll be eager to show you she can do it.