DATA!! I feel your pain bro! I am in the same situation...I have turned into a fat-ass. I am 5'10 and weigh 236 ugh I've always have been between 160-175 Now as I inch closer to the big Four'O I realize I am at the point of no return. I have to get in shape to!
I have used green tea fat burners in the past, and have felt that it helps. Reasearch Green Tea, it's good for a lot of stuff! Incl weight loss. If you have a rapid heart rate or any kind of arythmia be careful sometimes all these stimulants in fat burners can make something like that worse.
Good Luck! Maybe we should start a support thread, and we can motivate one another.