Joe
Welcome to QSX.
You are going to get tons of support and advice, so I'll give you the abbreviated version of mine. If you haven't already, start this morning telling everyone you know that you have quit for good. The more, the better. Hell, I walked around telling people I didn't know I had quit.
Second, get ready for one helluva ride. There will be times that no matter how many reasons you can come up with to quit, that your addiction will do everything possible to convince you to do "just one". Hang tough. It only gets better everyday.
Then, head on over to October '08, which will be your HOF group. Post up in there, get to know everyone, and start helping hold each other accountable.
Good luck. We're here to help you all we can.