Mel, how much do you have to lose? If it's a lot, the transition to South Beach may be okay for you in regards to losing. Otherwise, you may experience a slight stall. South Beach ISN'T a low-carb diet; it's a GOOD carb diet, so you'll definitely be eating more carbs than you would on Atkins.

I'll bet you'll feel better, though. Not to knock Atkins, but all that fat (including eggs!) just about killed me when I tried the diet.
Check out the recipe section here... there are lots of good ideas.