Please remember the reason atkins advocates eating as much as you want is to a) make the diet appealing and b) to get the dieter to be in touch with their natural hunger (not sugar induced hunger).

However do not be decieved into thinking calories are unimportant. Calories are still at least as important as carbs, if not more so. The only way weight loss occurs is if a caloric deficit is created. Watching carbs simply allows a caloric deficit to be made much, much less painlessly than it would otherwise have been . So yes, you do need to restrict your calories to lose any weight, but I wouldn't worry about this too much in the begining. Your body will tend to restrict calories naturally early on. When you get close to goal that is when you will want to start worrying about calories and stuff. For now just stick to induction and the allowed foods.