Almost no disadvantages...i am using it from very long time..it has been never reported any problem yet!!
Yes you can, just type you 2009 registration number in if / when prompted.
go to www.majorgeeks.com they have the latest kaspersky virus database.
There is an article giving step-by-step guide of Kaspersky installation. You can learn it from here: http://www.sharewarerating.com/kaspersky-anti-virus-2009
According to kaspersky 2009 version kaspersky 2010 will give you better updated definitions
why kaspersky is safe?
Yes, indeed. There is the answer from the experts at Kaspersky Lab: "At Kaspersky Lab, we protect over 250 million systems worldwide. In 2007 we saw more malicious threats than in the previous 15 years combined. Kaspersky Internet Security 2009 represents a breakthrough in the way we protect our customers with the strongest, most efficient anti-malware technology in the world. And we back this with the finest support team in the business. Trust Kaspersky Lab." - Eugene Kaspersky http://www.antivirusroot.com/Kaspersky-Internet-Security-2009.html
Kaspersky Labs has been one of the best antivirus software developers in the world for over a decade and now Kaspersky Anti-Virus 2009 only strengthens that reputation. Founded by Natalia and Eugene Kaspersky in 1997, this Russian company is often the first to find and identify new viruses. Long used in Russia and Europe, Kaspersky is now making inroads in the North American market. Kaspersky Anti-Virus 2009 is one of the most effective antivirus packages in the world today and boasts a great interface with easy to use and intuitive controls.http://www.sharewarerating.com/kaspersky-anti-virus-2009-your-own-choice
No, you can't.
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
Kaspersky 2009 provides internet security including the top features of navigation. Safe Money and Secure Keyboard provide a unique way to enter your personal information providing you with greater protection from identify theft.
You install kaspersky .
Eugene Kaspersky