Not sure how all this works and I'm not able to get on-line all the time. Any how, I'm looking for a nice used bike..........something in the comfort style. I ride in the parks with some hills. Now I'm using a friends bike, but need my own. I don't do any road riding or competition stuff. That's about it I think.
Sounds like a hybrid (cross between a mtn bike and a road bike) would do you well. Check your local classified ads, bike forums, Craig's list, & ebay.
try craigslist or ebay, but try to find someone that knows a bit about bikes to, at the very least, have a look at the ad and preferably the bike itself before you spend any money. Chances are there are a few bike shops in your area that sell used bikes, these might cost more than on craigslist but they've probably all been given a thorough tune up before they are put up for sale.