By Frank Macek As we approach the final deadline for the transition to all digital television, many people are replacing their old television sets with new, hd sets. But what do you do with that old set? Before you simply toss it on your lawn for the garbage man to collect, consider this: old sets have up to eight pounds of lead in them. Putting them in landfills can greatly increase the likelihood of poison getting into our water supplies once the sets are crushed and the seeps into the ground. Now multiple that 8 pounds of lead by 27 million sets that consumers discarded in 2007 alone, according to the latest numbers from the Environmental Protection Agency. You see the problem. For the lead reason alone, many municipalities have now banned TVs from landfills. Unfortunately, you can't just drop off the TV at the local thrift store or recycling center and call it a day. Some charities no longer accept used TVs since the cost of getting rid of broken sets won't offset the money...