Well I am not here to nag, however maybe this will be of some incentive. While yes, a smokers breastmilk is still better than formula, this is what you are putting your baby at risk of, just to have a cigarrette:
Addiction
Atherosclerosis (hardening of the arteries)
Middle ear infections
Destruction of brain cells
Colic or excessive crying
Circulatory damage
Chronic Depression
Sudden infant death syndrome (SIDS)
Decrease in your child's ability to learn or memorize
Not wanting to initiate breast feeding due to smoking
Growth of brain neurons to process nicotine
A reduction in the breast's ability to pass key nutrients to the infant
So that being said, don't try this new drug, just quit. I can completely sympathize with you. I am an ex-smoker. I smoked for 12 years, and quit smoking as soon as I found out I was pregnant (2 weeks pregnant), I breastfeed, and I have not had any desire to go back to smoking, because I am a child of a parent (s) who smoked. I have severe adult asthma, and I believe 100% it's from my Mom smoking, due to there is no family history on either side for asthma. So please, find a way to get motivated and get the courage to quit, with out the aid of anything. Do it for your baby, and keep breast feeding. Good luck!
By the way, if you want to read up on the studies that were done here is the link: http://whyquit.com/whyquit/LinksBirth.html
OH yeah, skip to the sippy cup, I know a few people who have had no success with the bottle and went straight to the sippy with no problem.