Hey there. Just registered, haven't been into biking before, but want to start on a limited scale. Here's the story. I'm 55, male, currently weighing in at about 260 lbs. I was at 290 last fall, went on a serious diet, and lost the first 20 lbs pretty fast, and have been walking for exercise. I want to get a bike and cover a little more territory and see some different scenery. I've been walking 2.5-3 miles, 4-5 days a week. I'm feeling better, but my goal is getting down to around 220 by December. I'm wanting to buy a bike, but don't have unlimited funds to spend(who does these days?) Any way, I've been looking at some bikes in a wal-mart ad, and I'm wondering if they will work for me. Specifially the Schwinn Sidewinder, and Schwinn Aluminum Comp bike. I think I want a mountain bike, cause I'll probably be doing some of my riding on gravel roads. I'm just gonna be a casual rider, I think probably like my walking, 4-5 days a week for an hour or so. Will bikes like these work for what I want, and is the quality decent? Thanks for any help, I'm sure I'll have more questions later.