JeannieF is right--everybody is different. I started counting my fat grams when I realized I wasn't losing. By experimenting with different counts, I found I needed to keep my fat to 25-30 grams a day, plus keep my carbs to 20 during Phase I of Curves plan (like the Atkins induction, it lasts 2 weeks). It worked great for me, but like I said, everybody is different. I just happen to be carbohydrate and calorie sensitive. It can make for a greater challenge dieting, but it can be done.
Another key to Curves plan is when you hit a plateau, you GAIN back 2-3 pounds to stimulate your metabolism and begin again. It worked great for me.
Also, walking was not enough for me. I believe the strength training was another key. Now if I could only lose those last 10 pounds!!