Weight loss isn't a good goal since loss of fat is really what you're after. Running a mile a day is going to increase your muscle and muscle is heavier than fat. So you could lose fat and gain muscle without losing weight. Having "skinny clothes" to try on periodically is a better test than a scale. The great thing about running is that your metabolism will kick into a higher gear and you will burn more calories all the time, even when resting. And by the way, any new activity you add to your life on a regular basis will do this for you. Some studies have shown that walking may be even better than running.

All things being equal, running a mile a day may help you lose as much as a pound per week. It's hard to say because it depends on several factors, like your metabolism and your diet. If you eat more than your body needs on a regular basis, or if you eat a lot of bad-for-you stuff, you may need to run two or three miles a day just to maintain your weight. But if you eat a well-balanced diet and don't have any physical conditions that affect your metabolism, any exercise will help you lose weight.

Cant really say that but do this, eat a mill then get on teh treadmill, one that shows you the calories burnt then burn them all back down to zero. That works really good for me.

I think it just depends how your body is. (if that makes sense). For some people it doesn't do much. It might depne don how our metabolism is. If you have a good metabolism you'll burn more. If not...it might take longer to notice "results".