Yes, you can achieve a supply by simply pumping. It's difficult to say how much milk you'll have, because past success is supposedly no indicator of future success in this, but you can certainly do it and the bonding benefits alone are well worth it (at least, they were to me!). I think the schedule in the protocols is a pretty good start at it... 6 weeks before your due date - start pumping. Here is a link to the protocol instructions on it:
http://asklenore.info/breastfeeding/induced_lactation/regular_protocol.shtml which allow for you to pump only every three hours during the day at first, and then when you're a month out from the due date, add at least one night pumping and pump every 2 hours during the day.