Stay close to the site when you can, Len. It's rough, but it helps to read what others have gone through-- it's all happened before. Keep getting through it--- each crave beat down is another victory. You're teaching the addiction that your hard head is going to win. It'll fight back, but you'll be building strength in your quit with each win.
Read all you can here to learn about your foe, the addiction. And make friends here to serve as support and accountability reinforcement. You can do this!