add weight training into your exercisesdo things like push ups or situps if you dont have actual weights
the best thing is to NOT stay consistint in your exercise...dont get me wrong keep exercising but...switch it up a bit Becasue your body will start to get used to the regualr routine you do..but not much but enough to make a difference.. and mkake sure you get a lot of protein becasue muscle burns fat a lot quicker then just trying to sweat it out
You also need to get on a good diet check out http://dietreviews.wetpaint.com there are some great weight loss programs there that have been proven to work.