Create Regitry Key
when you want use this function,you open some metro apps after you go back desktop and move mouse on left desktop,select snap
You can drag and drop...
Try to Download driver ATI X2500 on http://global-download.acer.com/GDFiles/Driver/VGA/VGA_ATi_8.401_Vistax86.zip?acerid=633643040979736350&Step1=Notebook&Step2=Aspire&Step3=Aspire%204920G&OS=V08&LC=en&BC=Acer&SC=AAP_8