Just stopping in to commisserate. I was 260 about 2 months ago; I ought to be 160. I'm down to 228 now; and my routine consists of almost purely cardio.
The thing is, you can't target weight loss. Doing crunches doesn't flatten your stomach; fat burns evenly. So while I understand that very little weightlifting will burn muscle as well as fat, I'm sort of going for a reset button, into a scrawny weakling; then building back up.
My diet is mostly vegetarian now, with about 8-10oz of chicken/turkey or fish, and I eat 5 small meals a day to keep my metabolism going. When I get bored, I hop on the bike or go for a walk; and I think that's the key. I've turned my free time into motivation. I burn way more calories than I eat on most days because of that.
An example routine (what I did today):
2 hours walking on the treadmill at a 10 incline at 3.5mph. Then interval running (2 minutes walking, 2 minutes jogging/running) until I can't run anymore. I did one hour of light biking as well. For breakfast I had egg whites and carrots. In between snack I had cuccumbers and carrots. For Lunch I had a small piece of chicken (4oz) on a wheat roll with green peppers, tomato and onions. In between lunch and dinner I had a small handful of almonds and orange juice. For dinner I had another 4oz of chicken with black beans (low sodium) and more cuccumbers. I try not to eat 3 hours before I go to bed if possible, and I drink only water, milk and OJ. I've cut soda and alcohol completely out of my diet for now.
Good luck, all!
-Idle