To figure out how many fat grams specifically you want, you would take the total number of calories it takes to maintain your body weight (normally around 14-16 calories per pound of body weight). Subtract your protein calories from that number and then divide by 9 (number of calories per gram of fat). This should give you how many total fat grams you need to eat per day.
Carbs are only problematic when eaten excessively, beyond what your body requires. As long as you are eating low calories then carb intake will make very little difference in respect to fat loss. In other words, two diets of equal calories with varying levels of carb intake will result in the same level of fat loss. If you are still unsure then you can read this brilliant article by Lyle McDonald, Low Carbohydrate Diets Have No Metabolic Advantage. In addition, carbs in the main meal serve very important functions such as increasing leptin (improved satiety and metabolic rate), refilling depleted muscle glycogen stores and triggering the release of serotonin which will improve your quality of sleep and make you feel good.
Hi, my name is Kate and I would like to share my story. Up until about 2 years ago, I was 30 pounds overweight. Over the years I had followed many different diet plans, but failed every single time. I was "blessed" with a pear shaped body and no matter what i did, I always retained lots of stubborn fat in my lower body. Everything changed when I found the right diet program. Read my story here ==> http://bit.ly/mydietstory