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Some additional tips, (I lost over three pounds per week, on average, for a couple of months in 1998, following this plan):
1) Before you go to bed at night, pour a huge glass of water, (at least the size of a big Slurpee cup, preferably bigger. Use two containers, if necessary. Let this water sit overnight, so it's at room temperature in the morning. You don't want it warmer, nor colder than that. First thing in the morning, chug all of the water. Within half an hour or less, you should feel the need to take a dump. If you do this for a few days, the length of time between drinking the water and taking the dump will decrease and become more predictable, (ie 5, 7, 10 minutes later, every day). If you miss a day with the water, don't expect your bum to remember. The purpose, of course, is to dump the garbage out of your system to start your day. Kick boxers use this system, and probably other athletes in training, but I got this tip from the brother of a Canadian Kick boxing champion.
2) Walk, walk, walk! Devote as many hours as possible each day to walking. Look for a route that you can circumnavigate in about 45 minutes to start with, and time yourself. When you can do that route briskly, extend the circuit, or chose another 'track'. Having elevation changes will help your calf muscles, and increase the calorie expenditure. When you get good at this longer route, put some weights, (start with 10 lbs, go as high as 30 after a reasonable period), in a backpack before starting your walk. As you get lighter, there's not as much mass to move, so your body needs to use less energy. Make it work harder. Bodies love calories, and they are reluctant to give them up voluntarily. Having a dog that likes to walk briskly helps with the walking. Having one that moves like a centipede, not so much.
3) Do situps, and lots of them. If you've been neglecting the gut muscles, doing 15 might be a chore for the last couple of times. In the first session, go to a multiple of five number next above the last one you didn't want to do. Rest a while, then do them until you reach the current target, or as close as you can get. Rest longer between reps if you missed the target, or barely reached it. Try to do at least three reps on the first day. When the first target becomes easy to do, keep going for as long as it's not uncomfortable. Round down to the nearest multiple of 5 for your next target, then repeat the process from the higher initial target. Add reps daily as you become able to accomodate them. Do them watching tv, with the commercial breaks determining the rest interval, but you don't have to do a rep every time there's an ad. Try to go forehead to knee in the situps, rather than just elbows. That's a ways from where you would be, starting out. You're trying to burn calories at this point, not maintain a six pack. You'll be amazed at how high your target will get after about two weeks. When you have a target that you could, (but wouldn't), boast about, stick with it for a while, and either try to do it more frequently, or with less rest in between.
Lift weights: You're already doing that. Go for quantity of reps, rather than amount. Maybe alternate weights and situps on tv ad breaks, or one rep of each.
Don't eat after 6:00 PM: Have your supper early. Don't snack after dark. Eating fruit or vegetables, or drinking liquid, (water, low cal soft drink, vegetable juice is OK). Fruit juice can contain a fuck of a lot of calories - read the side of a box of Fruitopia some time, and keep in mind that the calorie amount shown is for a suggested serving, ie: the amount a five year old would drink. Eating late means you're digesting when you're least active physically. Your body embezzles the calories it didn't need to use, and hides them where you're least likely to notice a change.
Eat boiled meat: This is very hard to do for an extended period. I ate boiled chicken legs frequently. This way, you don't add any calories in the cooking process, and there's no temptation to eat the skin. A lot of the fat you might otherwise eat will float to the top, and the rest is easily removed when you are removing the bones.
Dark chocolate (in moderation) is actually good for you, as is LEAN red meat. 
