Adding to the advice already given:
* Wear a piece of the baby's clothing near your face, so you can smell it
* Massage your breasts before pumping. I like to go in a circular motion, almost like I'm doing a monthly lump exam. Go from the outside of the breast, in.
* Relaxing is a biggie. Take 10 or 15 minutes ahead of time to relax, if at all possible.
* Get more rest. This goes hand in hand with relaxing!
* Pump more often. Every 2 hours until you get a better milk supply. Pump 20 minutes, even if you have no or little milk flow.
I had an extreme preemie, and while she is now 38 weeks, she still isn't breastfeeding...so I've really had to learn to make milk to the machine!
I hope this helps!
Kristina
http://www.kristinaseleshanko.com/baby.htm