Tip 1 - Switch to brown rice. Lower glycemic index.
You can't spot reduce. Fat burning and exercise doesn't work that way. Exercise will tone muscles in a given area. If insufficient muscle tone is causing your gut to protrude, crunches and other ab exercises will help. To reduce the layer of fat covering the area, you'll need to reduce the overall level of bodyfat through diet and exercise. You'll want to stimulate the body to metabolize fat at the maximum rate throughout the day, so even when you're not working out, you are still burning as many calories as possible. Even a small amount of resistance training can accomplish this, at least in the beginning. If you don't exercise at all now, you could work with weights for 15 minutes a day, 4 days a week, and provide some pretty dramatic changes when combined with some basic diet improvements. Key dietary changes would be such as completely eliminating refined sugar and white flour, and adding fresh vegetables.
Good luck