Unfortunately you don't get to decide where you lose fat. That's just genetics. I'm currently losing in my boobs and rib area, which I'm ok with.
But you can lie a little bit by lifting weights and building muscle. For example, I have big arms (I don't know why; it's weird). I lift heavy so my arms are still big, but less jiggly and more angular. :D You could do ab exercises. It will not burn fat on your stomach any faster, but it may help it look more defined.
Start lifting heavy weights 3 times a week (New Rules of Lifting for Woman or Starting Strength) and cut out processed foods and refined sugars. This will help your overall shape a lot, including your stomach.
Okay, so here is the situation: fat around your lower abdominals is the most dangerous type of fat - called visceral fat - that you can carry around. The last reply about lifting weights and cutting out sugar is absolutely correct. Running is wonderful for burning fat but you will never get a tight, hard body unless you lift weights, preferably heavy, a MINIMUM of 3 days per week. Your repetition range for lifting should be from 6-10 and 2-4 sets of each exercise.
Now for the sugar.
Sugar is one of the most detrimental "foods" available. It causes your immune system to be less efficient and causes your body to be unable to completely rid of unnecessary body fat. This is because sugar causes an insulin spike in your body which causes your body to store your calories as fat and makes it even harder for you to get rid of the fat that was already there. Sugar can be found in many food products that you would never even suspect. Bread, Yogurt, cereal, soup... the list is never-ending. Check the ingredient list... sugar, corn syrup, dextrose, sucrose, etc... are all forms of sugar that can be harmful to your fat loss efforts.
If you have any questions feel free to message me! I love you help people out (:
Best of luck with your goals! Keep fighting!