Robwen - to 3FC and the 300+ forum! I definitely know what you mean about needing to lose the weight for health. Please jump right into the discussions on the latest 300+ . . . # thread.
You don't see many 28 year old's in the cardio unit of the hospital do you? Of course it is somewhat a blessing considering it triggered my healthier way of life ;-)
It is so good that you are realizing this before you have alot of actual problems and I wish you luck and welcome you to 3FC