Thanks for the advice everyone. To those who were wondering, DD can now sleep 5-7 hours at a stretch on a good night, (usually the nights DH and I are, um, using, another bed ;) ) which is why I think she is just waking up from me. On the other hand, I firmly believe that babies should be sleeping with their mothers, so I haven't decided whether or not it's too early to put her in a pack in play. Any thoughts on that?
I've heard of the no-cry book, but never read, I'll have to check it out!