My mother does a sort of Atkins/ Slimfast combo, but instead of Slimfast bars and shakes she eats Atkins bars and shakes. That could also work in the short term.

But I definitely agree with Karen. The real way to lose weight and keep it off is to learn good eating habits. The wonderful thing about low-carb (and a good part of the reason why it's successful as a long term way of eating) is because it's rarely that depriving. Most low carb plans include filling and delicious items with high fat, so it's a lot easier not to miss those carbs.

Anyway, I hope you find something that works for you! Keep up that walking, for sure.