if your dog has milk coming from the nipples then get her a place to birth, like a crib, and have her go in it every day, and when the milk starts coming out then she give birth in about 2 weeks, depending on the breed, then just give her attention when she is in her birthing area. make sure she can get out and the one day she won't. and she'll start to birth. then when the pups come out take them and clean them, BE GENTLE!!
them put them back in the birthing area, the mother will take care of them, and bring regular food and water to the mother. she will take a few min. between births and expect a few losses.