You can't really just "speed" it up, right off the bat, and just sit there and expect your body to burn the excess fat off. You could try multiple things, you could get a diet and do cardio, along with some fatloss supplements, or steriods! I'd advice the diet and cardio, then get some supplements and if you must, steriods/GH. Try making a cutting diet, and doing some HIIT (http://www.musclemedia.com/training/hiit.asp)!

move to ethiopia jj sorry that was wrong

i think diet and good training would be your best bet... you have to be consistent with your diet.. and don't expect to lose all the weight in a short period of time..

setting goals is good

Change your eating habits to make your body process fat as the primary fuel source. Increase your protein and watch your carbs.

There are a number of other options, but this is the way to start.

The 2 biggest things that drive up your metabolism are eating and exercise.

Here are some guidelines:

Drink plenty of water (1-2 gallons per day)
Eat plenty of protein (1.0 - 1.5 grams per lb of bodyweight)
Restrict carb intake and eat primarily low GI carbs (ie vegetables)
Eat good fats and don't drop fats too low. If you eat fat with low carbs you will train you metabolism to be a fat-burning machine.
Eat every 3 hours.
Avoid alcohol. No matter how great you diet is, this will sabotage all your efforts.

CARDIO