What do you guys all use to clean your laptop or TFT computer screen? Our big screen manual recommends isopropyl alcohol and my laptop manual says, do not use alcohol, use glass cleaner. Our big screen is a replacement as the original one simply stopped working after 6 months, but we had bought some isopropyl wipes and carefully cleaned the screen. It never did look right afterwards, always had marks on it that we couldn't shift no matter what. So far, with both my lap top and the main computer screen, all we've done is wipe off the dust with a soft lens cloth. However, when the light shines on them now, there are marks that are starting to get annoying and I would like to clean them. Having experienced the mess the wipes made with the other screen, i'm reluctant to use anything on either of them at the moment unless someone can recommend something that really works. So, what are your do's and don'ts please.