hi i was just woundering if any one could help me out here. i had avast as my antivirus on my pc. and then someone told me norton was better. so i tryed to download it witch wiped half of my avast off but wont let me get rid of the rest of it and wont let me put it back on either! i have got avg4free on at the moment but the avast keeps wipeing it off ever couple of days. could any one give me some addvice on how to get the avast back on please?