CHeck Craigslist or something. A Walmart bike will be okay to get started, and it's better than nothing. BUT, if you are serious, spend your money on a good quality bike from a bike shop. There is a big difference in the quality and construction of bikes, and the ones from Walmart, Target, etc... do not hold up well.

Don't buy from Walmart. Buy from a local bike shop. They at least stand behind their product. The other problem with a Walmart bike, it WILL break and you will have to replace parts. You are better off paying more money up front

Due to budget: See if someone will loan you a mountain bike (preferably a hard-tail mtb). I suspect that you will have hills in West Virginia and the lower gearing on the MTB will encourage you to ride more. If they will let you then use some money to get slick tires for the MTB so you can ride on the road.

Check in the area for a bike along these lines:
http://www.raleighusa.com/bikes-road-urban-trail-misceo-misceo-1-0 - should be around $400
http://www.giant-bicycles.com/en-us/bikes/model/escape.3/14810/66193/#specifications - also around $400 but I wouldn't pay more than $250; the next model up the Escape 2

The Raleigh is the better of the two bikes in my opinion because the components are a little better. The Raleigh is a road bike frame with Mountain bike components... the Escape is a true hybrid and I doubt would ever ride like a road bike.

I did buy a Bike Store Schwinn (better than Walmart Schwinn's) when I started riding at 300lbs. It was a comfort bike and although I put several thousand miles on that bike I would have been better served with a Misceo.

BTW, if take the time to get to know a local bike shop (preferably one not locked into a Specialized or Trek deal) then you might be offered a deal on a used bike. For example, if I had $500 my LBS called me yesterday on a used carbon frame bicycle with Chris King wheels and 105/Tiagra components -- anyone want to loan me some money :-)

Went by ****s sporting goods just to kill time and looked at the mens resonance DBX anyone have any experience with this bike?

Did MFP do that? OMG hilarious. My daughter owns this bike. It's ok if you are 120 lbs. and a teenager. The mechanic at ****'s told me that they have had problems with the derailleurs.

I think if you can invest some money then getting a hybrid will be an awesome choice for you.
A hybrid can deal with roads, grass, some sand, so pretty much the surface a casual rider would encounter
It is easier to ride on a hybrid then a mountainbike on these kind fo surfaces.
a hybrid also easier to handle than a roadbike - no need to worry about pedals, about changing gear etc...these are fairly straightforward
if you have pre-existing medical conditions then a hybrid is a great choice - usually gives you an option of riding sitting straight up rather than bent forward - easy on your back.
if your riding skills are a bit rusty -(do you ride on the road with the cars? can you stop without putting your feet down at the red light?) then a hybrid will help you refresh them without risking yourself..
I would go with a hybrid:)

Mountain State Wheelers are the local bike club in Charleston. Look them up when you find a bike. They have rides for all levels. You might even try their site to see if they have any good LBS recommendations or places to find used bikes. Bikers like buying new bikes, and bikers spouses tend to think that means we need to sell older bikes... we rarely agree, but sometimes accept it... Good Luck.