The limitations to the free download version of Kaspersky Antivirus are not very small. There is a 30-day trial to use the product, and some features are cut out.
Kaspersky antivirus Version 2012 (12.0.0.374)
According to kaspersky 2009 version kaspersky 2010 will give you better updated definitions
why kaspersky is safe?
Kaspersky Anti-Virus 2009 includes a fast malicious software engine, Secunia vulnerability database, and built-in system restore capabilities. It is said to be the number one of all the anti-virus software. Here is a website to download it for free. http://www.antivirusroot.com/Kaspersky-Internet-Security-2009.html
Just uninstall the older version and try to install newer version. In my experience Kaspersky is one of the best Antivirus software. I have experience a lot. It removes any kind of Trojan, backdoor and provides higher level of security.
Use Kaspersky Internet Security of version 9.0+... it is capable of clearing worms
We can do so by using a good antivirus. Just download some antivirus trial version and install it . But if your computer is badly affected you may not be able to install antivirus in that case you may download free virus removal utility which will clean your computer . For example you may use kaspersky virus removal utility. But using a good licence d antivirus will not let you come in such a situation.
yes
You can download McAfee Antivirus 2008 and you can use that but only for 30 days. You have to purchase if you want the full version. You can download full version of McAfee Antivirus 2008 for free. You don't need to purchase just to have the full version of McAfee Antivirus 2008. You can download that in torrent sites. In order you can download you'll need a torrent downloader. There are lots of torrent sites out there sharing full version softwares but those softwares are illegal.
I have enclosed a link, in the related links section of this page. It will bring you to the website where you are able to download the Full Free Version of AVG Antivirus.
Download it from google and install it
You would have to get a keygen which is usually included with an illegally torrented version of the file (in this case Kaspersky). However, I would not do this as it is illegal and punishable by federal law if you are caught.