The current program, introduced in late 2010, is called PointsPlus. The previous program is Momentum. Pick one. Do not try to merge the plans into your own thing. It most likely won't work.
Online calculators (including a daily points target calculator, food PointsPlus values, and old Momentum Points calculator
A good, quick summary of PointsPlus, but basically, the new food calculations are based on protein, carbohydrates, fat, and fiber grams in food. Yes, carby foods are higher points. Don't freak. You get more points per day, and per week. Most fruit and vegetables are 0 points, but see the Zero Points Food list linked on the left. Do not use the nutritional information to calculate things like bananas. They will have a value, but you must disregard it. WW calls them ZERO.
Regardless of whether you're counting daily points (either with PointsPlus or Momentum) or doing Simply Filling Technique, your meals and snacks should be built around the Filling/Power Foods list and healthy guidelines!!!
Good Health Guidelines
5 servings of fruits & veggies
2 servings of milk products
6 glasses of "liquids"
2 tsp healthy oils
1-2 servings of lean protein
1 multivitamin a day
Choose Whole Grains when possible
At least 30 minutes of activity a day most days of the week
Limit sugar and alcohol