Watch them like a hawk when they're inside. If they start sniffing around, take them outside. It's better not to give them the chance to even pee inside, because the more accidents they have, the harder it is to train them.
Bring the puppy outside a few times an hour, and when she pees, PRAISE her like crazy and give her treats.
If you catch her peeing in the house, clap loudly or say NO to get her to stop, and then bring her outside to encourage her to finish there.
If you find puddles on the floor inside, don't scold her. She won't know why you're scolding her, so just clean it up.
*siggy by the talented Jen*