Tell about impotant of antivirus sotware1 person needs an answerI do too

That is a good question, there are virus , worm , trojans , spyware and many bad things that could harm your system. For example they could block your access to internet and show you unwanted things and in general they could bring trouble for you that you might end up to take days or weeks to resolve them. Viruses could come from Internet, removable media such as flash memory , cd or any other places. Having Anti-Virus would help to block and remove them and instead of going through so much trouble to solve a problem a anti-virus could prevent problem at the first place.You could use Microsoft free Anti-Virus which is Microsoft Security Essentials:http://www.microsoft.com/security_essentials/default.aspxAnti-Virus will basicly guard your system against things such as programs that could harm your software.