Well I have been on atkins a week and a half now. So far lost 6lbs. The important thing is to understand what the diet is about - and that means reading about the four stages of the diet - they can be found on the top of the page, where the stickies are. Alternatively, use a search engine and then decide whether Atkins is for you.
I am on induction at the moment, which means that I am having a maximum of 20g of carbs a day. Most meats are allowed, as is fish. Veggies are limited, as is most fruits. Some low carb fruit is okay, such as strawberries and blueberries.
Personally I think it's important to plan your meals in advance - make sure you know exactly what you're eating and how many carbs each component has. Water is an absolute MUST. 2litres minimum. This helps flush the body of toxins and also helps the body get into ketosis, or fat burning mode - which typically happens about day 2-3.
Exercise is also a must, this helps to accelerate the burning of fat stores during ketosis, therefore speeding up weight-loss.
I'd reccoment getting the book if you think Atkins is the diet for you - it will tell you in more detail what the diet involves. I don't think Atkins is a diet - it is a new way of eating for life.
Welcome, and good luck!