so when i use LCD Density Changer (https://market.android.com/details?i...=search_result) when I change my size to 120 it works fine the first time but when i try to do it again i get this really fuzzy grey screen like you would see on a tv if it weren't getting a signal.
I use Root Explorer. Go into the /system folder, and long press build.prop. Select "Open in Text Editor." Find the entry where it sets the LCD Density, and change it to whatever you would like. I'd recommend 120 or 140, personally.