I have just set up Avast Home Edition for my father and have found it to be a very good free AV, especially for those who are looking for a free solution for home use. In the config. of the AV setup there is a box there where I can add extensions, I am presuming these are extensions like .exe, .mpg, .jpg etc etc. What are the best extensions to use for this type of config. Also I noted that when I did my NOD32 settings through Blackspears tutorial, in there he also had added extensions re the settings of NOD32.