as far as chains go you can make your own or get them like of ebay i saw several auctions recently, make sure they are for the radius of your tire, 15 or 16 , whatever you are running, when you are starping them in check each link carefully so you don't have any doubts, the best chains for traction are the net type which look like a fishnet, use extra rubber eleastics on the outside of your rim to ensure tight fit, also remember they are not very good for your tires,
another note to the other posts, the one said that chains are not good for traction, no offense but your probably never used them because they are illegal, remember it's not the vehicle it's the driver's skill, i am a proffesional driver with nearly 20 years experience and a rig like a 2wd drive explorer with traction chains can get you through hell and back, literaly, my 2wd will get me anywhere, again not offend 4wd guys, yes with a front axle spinning you havemuch more offraod capability specially in the mud, but don;t think of it as a get out of jail free card, soft foot on the gas, knowing your truck's abilty, feeling when your tires are slipping and preventing wheel spinn is what smart offroading is about, a it calls for a good driver, off roading is not who can spin 4 wheels the fastest to get through the trail- thats lack of skill and stupidty, thats my two cents