La Leche League International, an organization of breastfeeding mothers, holds local support groups around the world. Pregnant women are welcome at the meetings, which can be real eye-openers. The sight of women easily nursing (even those with twins!) outside the house, with no nursing aids such as special pillows and privacy blankets to cover the baby, can be extremely inspiring.
You'll find tremendous support online too. Visit the Breastfeeding Zonein BabyZone's community. Good books on nursing can offer a wealth of information. Reading up on breastfeeding is time well spent in the waiting room during your prenatal visits.