One of the most famous and free anti-virus from worlds biggest software company, Microsoft Security Essentials is now available in 33 languages.
If you are running genuine copy of Windows XP, Windows Vista or Windows 7 then you can install it on your computer, this is available for free for Home and Small Business Organizations.
This security suite can be used on Windows XP (32 Bit), Windows Vista (both 32 Bit and 64 Bit) and Windows 7 (both 32 Bit and 64 Bit).
To download just head to below link and select your OS and download it :-
Some handpicked devices for you