While you are at it... you might want to read the newbie FAQ on the front page. People tend to get annoyed when you ask questions that can be easily found. This topic has been discussed many times on AO... so if you have a question... use the AO search feature on the top right of the front AO page.
Quitmzilla is a firefox extension that gives you stats on how long you have quit smoking, how much money you\'ve saved, how much you haven\'t smoked and recent milestones. Very helpful for people who quit smoking and used to smoke at their computers... Helps out with the urges.