if u wanna do it the natural way, all i can think of is ur diet n excersise [loads of fresh food, plenty of fibre, and loads of water (2 litres a day)]. or the quicker n easier way, as bong man sais... ecstasy. iv heard that a glass of grapefruit juice a day helps break down fats, i think 2 litres of water a day is the most important tip, i believe water is the cure most things. if u got a slow metabolism, av a look at these tips... http://dietforum.com/N-increase-metabolism.htm
im lucky, i have a very high metabolism
hope sum of this is helpful 2 ya, good luck xxx