A relatively short (5'8'

, stocky/'big-boned' guy, I'm in my early-40s and, after having added a huge amount of weight and getting way out of shape in the past several years, have started reducing calories and recently joined a health club where I've been walking on treadmills. I would like to lose about 100 lbs. in all. Aside from the health issues regarding my overweight (which is serious enough) I have no other serious health problems that I know of. Right now I'm walking at a pace of about 3.8 mph at an average incline of between 6 and degrees. (I'm using LifeFitness programmable treadmills and the incline level I typically select is 6 or 8, which I *assume* corresponds to 6 and 8 degrees.) I have always perspired profusely when jogging and since I've been walking on the treadmill I have invariably been soaked with sweat at the end of my workout. (I've been doing squats, bench presses and a few other weight-training exercises after my treadmill sessions.) I've always considered myself to be a comparatively slow jogger/runner. Of course, so far (at 275+ lbs!) I haven't actually begun jogging/running on the treadmill yet BUT would be interested to know what a good pace to aim for would be. 10-minute miles? Faster? Also, any treadmilling suggestions/advice other more experienced and in better shape newsgroup participants could offer would be much appreciated.