A.G.
Danielle,
Have you heard of the Mommymuscle series? There's a great one for just Abs called restore the core and one called MommySculpt.
If you want to do the DVDs in class setting, I know that there are classes offered throughout Denver. Visit www.strollerfit.com to find a location near you. The workouts are AWESOME. I've met so many amazing moms and it's nice to have a group to help keep you motivated.
Good Luck!