I know that it may sound silly, but the dog really should be introduced to the sound of a baby crying (even screaming!) before it comes home from the hospital. Try it yourself, use a tape or whatever.

Also, you should try getting the dog used to you holding something and fussing over it with it possibly making noises. I recommend a doll. If the first time your dog sees and hears you holding and caring for your baby is when you are actually holding your child in your arms, be prepared for a very curious dog that is going to want to be all up in your business. You need to desensitize him to it first.

It would probably be in your best interests to not allow the dog on furniture. I don't know how this would fly, but if the dog knows the rules, then there is a smaller chance of him jumping up on the baby or into your arms when you are holding the baby. But don't institute these new rules after the baby has come home, you don't want him associating bad things (ie new rules) with the new baby. Start now.

Also, in order to combat possible jealousy issues, try not to make it appear like you are choosing your child over your dog. When you are with your child and caring for it (holding, feeding, burping, playing, etc.) and the dog is around, try to make sure that the dog isn't being left out. A treat, new toy . . . something the dog finds fun and exciting will make your dog associate good things with the baby. A dog that associates the baby with neglect, isolation, etc. is what you are really trying to avoid.

Good luck.