please tell me ur recommention anti-virus..

TRUST ME ON THIS ONE:
ESET--NOD32.
It is the best antivirus out. period. end of story. No others compare with it.

http://www.nod32.com/

there is a free demo.

go read some reviews online.
 
I use Symantec Antivirus Corporate Edition from over a year and I'm not dissapointed. NOD 32 and Avast are good, but from my experience, I recommend Symantec (maybe others won't agree my point of view, but that's my opinion).