How can we identify that our system is having antivirus software?

just check ur program files, see whether there is some common antivirus name. If no, just install one. I recommend you AVG Free Edition.

One more to check is, go to your Window Security Center where you can set firewall. See whether there is ANTIVIRUS is installed or not.

How can we identify that our system is having antivirus software?house call

It's easy to do that. No problem at all!!

For XP users:

First open control panel. In that launch the security center(it's icon is a shield with 4 colours on it). Here you can know about the status of the anti-virus on your computer. It is the third option from the top.

I think even for windows 98 and 2000 the same procedure can be followed.

How can we identify that our system is having antivirus software?matchless

Open control panel and see security center it will say yes or no for antivirus
You should be able to see your antivirus icon either in your taskbar or desktop.If you don't them it is not install.To be doubly sure go to Control Panel--%26gt;Add and Remove and checked whether the program is there or not,if it is there go to Start--%26gt;All Programs and click on your antivirus program.