dj, try mine. it's excellent on the abs and shoulders, and if you want to go all out, it can really burn your shoulders and strenthen your lower back. i try and bone at least 4 times a day. try and steer clear of any sandwich action it will make you think of food. also on the weekends try to double your rep's.
seriously, your main concern should be sugar. lay off it! apparently you have an office job so it's really easy to gain weight, drink alot of water. if and when you crave something w/flavor to drink, try gaterade.
as for what to eat, to lose weight quickly you can try a portional diet, i've tried that and it does work if you stick to it. what you do is eat pretty much anything you want (as strange as that may seem) but make it about the size of your fist in portions every three hrs. the healthier you make the the diet the quicker you'll lose weight. trust me though, it's alot harder than it seems due to the fact that your stomach is used to eating it's fill. you'll feel hungry at first, then you'll get used to it. btw, you'll also feel more energy because you won't have that full feeling anymore.