i have a acer travelmate 4002wlci from my dad. apparently the whole laptop is a mess. i mean dirty. i managed to remove stains from the exterior with the foamy shaving cream. however the stains on the LCD is too hard to remove. i didn't use anything to clean the LCD la. cause i need some expertise on cleaning the screen. degree of stain, kinda hard to remove unless scrap la.. seems the stain is from the keyboard when its close. so any advise from sifus out there on cleaning the LCD screens>?