Hi,
I am sorry, but don't know the specific answer to your question. Perhaps the AVG website, under FAQ's or Help, can answer them.
This is one reason why AVG has such a low rating at
www.cnet.com/downloads, in the Users' Opinions area.
If you wish to try a top rated free antivirus program, with downloadable free definitions every week, check out:
Avast free Antivirus Program
(93% approval rating at cnet.com/downloads)
http://www.download.com/Avast-Home-E...ml?tag=lst-0-3
(Better than AVG; with 69% approval rating.)
Best of luck,
fredg