To activate a trial or commercial version of Kaspersky Anti-Virus 2009 /Kaspersky Internet Security 2009 using the activation code the computer on which you want to install the application should be connected to the Internet.

When installing Kaspersky Anti-Virus 2009\Kaspersky Internet Security 2009 once the setup wizard is started the Activation window is opened with four activation variants: 

• Activate online - requires entering a 20-charset activation code. For successful activation your computer must be connected to the Internet. In this case the Setup Wizard downloads and installs the license key file automatically.
• Activate trial version - the Setup Wizard downloads and installs a key file which is valid during 30 days. For successful activation your computer must be connected to the Internet. The trial version is fully functional. When the trial key expires update of anti-virus databases is not available. 
• Activate using the key file - add a valid key file. This option suits users who upgrade from previous versions of Kaspersky Lab’s product and who received the key file from the activation page. 
• Activate later - skip activation on this step. Databases can be updated immediately after activation is complete.

In order to activate a trial program version, you should do the following: 

• In the Setup Wizard window select Activate trial version 
• Click Next 
• Wait for the Setup wizard to connect with the Kaspersky Lab’s server and to activate a trial version 
• Make sure the trial version has been installed successfully 
• Click Finish/Next

If you have failed to activate a trial version during the installation (for example if your computer was not connected to the Internet), this can be done later once the program is installed on your computer the following way: 

• Open the main activation window 
• Select License 
• In the right part of the window select Activate the application

• Repeat the above described actions to activate a trial version 
• Minimize the main application window

The dialog windows of Kaspersky Anti-Virus 2009 and Kaspersky Internet Security 2009 are the same but with the corresponding product names and the number of Protection components