You can have up to 20 grams of carbs a day during the first two weeks of the Induction Period:
http://atkinscenter.com/Archive/2001/12/15-325810.html
Here is the main page of the Atkins Center:
http://atkinscenter.com/index.html
I recommend reading the information in the web site to learn as much as you can about this diet so you can make a fully informed decision about whether you think it’ll work for you. You may also want to consult with your physician.
Works for me! I lost the fat that I couldn’t before when I was on the traditional low-fat, high-carb diet.