If you still find it hard to believe what a good cardio exercise like running can do to your body, see below real story which I copied from Dailymile of one runner friend of mine. He also posted a story about how it all started, which you can read it here
What you need to do is to start, and be consistent at doing it. You'll see the result as the time goes by.
"So what have I achieved within 11 months of running? As at today I've lost 17.5kg, pants size down to 33" from 38" and shirt one size down to 16.5. Primary goal of losing weight achieved! Moving on to the much tougher secondary goals in 2011!"
On a side note, my Powerman story is 50% done.. harap bersabar ye. Story teller is currently busy at work.