I hate to suggest spending money, but the Nintendo wii Fit would be the best you could ever spend. I've been on it since the end of 2008 and was at 250# with blood pressure at 183/97 and a BMI of 33. That was enough. I walked about a mile every day at that time and still do so that is not a factor. The program weighs you and measures your BMI and tracks it daily. That is a big help in reaching your goals. I started doing the stuff it suggested until I had regained my balance (that is major), and then switched to aerobics only. There is a free step option in which you just step up onto and off the pad as it counts your steps. I started with 10 minutes, went to 20, 40, and then a full hour every day. It suggests 3600 steps in an hour and I soon worked up to around 5500. Oh, and you can watch TV while doing it if you want to.
You also need to learn portion control on beef, pork, and sausage. Eat more salmon, turkey, chicken, and green veggies. Most other fish is good to. I went from burgers and fries for lunch to carrots and celery. I make my own healthy pizza instead of ordering Pizza Hut. Believe it or not you soon get used to it and even look forward to it.
I don't mean to sound preachy and self righteous, but facts are facts. Today I weighed in at 193 (I'm 6'2"). BP was 130/70 and my BMI is 25. The Nintendo program would like to see the BMI at 22, but judging from the BP I'm happy at this level. My Doc is too. Diet and exercise are the key to a longer life so we can enjoy reasonable servings of Que for a long time.