I completely agree with Angel-Eyes. Those sugar alcohols are sneaky little things. Before I became aware of them and how they really should be counted, I ate a sf candy bar at least 3 times a week and was completely stalled. Coming here and learning about them saved me
There's a sticky at the top of the Atkins board that contains a great article provided by our wonderful Leenie on the different sugar alcohols. I personally feel that there are better ways to deal with the cravings for sweets. First is understanding that we are in control of our bodies and not the other way around. If you're hungry, eat. If you're not (and you're still within the magical 6 hour time frame) then don't. If it's time to eat and you really want something sweet, try eating something fatty/salty instead. I can't tell you how many times bacon has stopped me from going over the edge.
If you must have sweet, sf jello is a good option. I've also taken to mixing 1/2 a packet of splenda with an ounce of softened cream cheese and eating it. It's just sweet enough to keep me happy and fatty enough to fill me up. I'm betting you could add unsweetened cocoa and a little extra splenda to make it 'chocolate'. I also stock up on Soy Slender chocolate sugar free soy milk. It's sweetened with splenda and only has 1 gram per 8 ounces. Makes great hot chocolate, too!