MotherBear
This Net carb thing is a confusion caused by our US cousins. The {scientifically correctly] categorise cellulose or fibre as a carb, even though it's not digested: so when you work out how much carb you've absorbed, you need to subtract the indigestible part of your intake. Thus net carbs is what you get when you subtract the amount of fibre from your total carbs.
In the UK, only the digestible carbs[the sugars and starches] are listed as "carbohydrates". Fibre[which the Americans correctly know is a carbohydrate] is listed separately.
This is where understanding a bit about molecular structure is helpful.
Hana
PS
If Atkins suits you, go for it! It probably won't hurt you to try.
Altrernately "South Beach" is a little less severe.