I am also trying to lose my baby tummy. From everything I have read and been told, you have to concentrate on losing the actual fat before you can work on tightening those abs. My trainer told me that you can work your abs and have muscle underneath the fat. I'm starting Atkins again.....then on top of doing ab exercises I spend alot of time on the treadmill to burn calories. I have also been told that Pilates is good. I take a Yoga class once a week and sometimes she incorporates pilates into it and it is a work out on your abs. Good luck!