Thanks sujanks, sajhabusaima, blah and milani and everyone who took time to suggest me. I thought AVG does not require me to register and i downloaded it, however it does ask for the license number after i finished dowloading. I went thru the link that milani provided here. Now what should i do in order to activate it and how do i register it? May be i need to download the trial version instead of regular which we need to buy? Can u guess, how is it working? sajhabusaima, somehow i could not download the norton thing. Do i need to register?