Basic healthy eating recommendations are:
45% to 65% of calories eaten should come from carbohydrates.
20% to 35% of calories eaten should come from fat.
10% to 35% of calories eaten should come from protein
The number of grams you will need will be based on the number of calories that are right for you to keep the balance. Here is an article that breaks the ranges down by calorie level.
Healthy Carb, Fat and Protein Ranges
The Numbers You Need to Know www.sparkpeople.com/resource/nutrition_art