I just bought http://www.amazon.com/VIZIO-E422VLE-42-Inch-120Hz-Internet/dp/B0088024V2. It's really my first real tv purchase and I have a dumb question. What is the best way to clean the screen? In the past, I've used a Swiffer cloth to gently wipe the screen or at times, I've used a bit of windex on a paper towel. I'm sure both of these are the wrong way, so I ask for your help. Thanks. Another off-topic question. The tv has USB ports. Can I put a USB thumb drive in it and play a movie right from there? Hopefully that makes sense. Thanks again.