ozneddy, best of luck and I am sure you can do it. How do I know? Well this guy (see link) lost 310lbs simply by riding a bike and eating better. It may be an extreme example but it is inspiring none the less! Good luck, and we are all here to help kick your butt when it needs some friendly kickin'.

http://istanbultea.typepad.com/largefellaonabike/