Dont use Wndex
Windex and other glass cleaners can leave a hazy residue on plasma and LCD screens. Fill a spray bottle with a 50/50 mix of filtered or bottled water (i.e. reverse osmosis or distiled, demineralized water) and isopropyl alcohol, then lightly mist it onto a very soft, nonabrasive cloth, such as a cotton T-shirt or a large microfiber dust cloth. (Paper towels may scratch the screen.)
I use it to clean my 20 inch iMac (none glossy screen).
Windex may be the best for windows etc, 409 is good for the kitchen etc. but never around computer.
Hope this helps.