yes, vnicepeeps, expressing is an option for some. but as britwife pointed out there are some women who don't express well at all. i was lucky i did. i was even managing about 20mL a go from about 36 weeks into my pregnancy! i was literally streaming w/colostrum before roisin was even born and had loads of milk from about 2 days after birth.
i was much more informed the second time around, too, and realised that problems at the beginning don't necessarily mean instant bottle/formula feeding for good. it can take a while for some babies to latch. the counsellor said she's even seen some formula fed for a week who then go to the breast no bother. roisin was a natural.
expressing can be a LOT of work, however, and that's why if you can feed them off the breast that's the way to go. you HAVE to pump often, and at set times so your body gets used to it and your supply stays up. it's not as efficient as a baby's suck on some. and it's not w/o discomfort at first - this DOES go away.
even just the two times a day i express i get an entire 8-10 oz. a go, in about 10 minutes, so roisin gets 'snacks' of breastmilk as well.
ANY amount of breastfeeding you can manage is a good thing. don't beat yourself up, ladies. give it a go and see how it goes.