Jane - I was also on Atkins a while ago - and am now on Core which I highly recommend. Core is very much like atkins in that you limit or avoid the bad carbs such as sugar, white flour, etc. You are encouraged to eat whole grains, fruit, veggies and protein - all of which are basically low glycemic index foods and therefore keep your blood sugar stable and help to avoid hunger!
If you have already done Atkins you will find this a great plan!
Good luck!
Frouf