How to install a new key file:

• save the license key to an easily accessible folder on your harddrive
• open the main application window
• select Activation
• in the right part of the window click the Install key link
• in the Setup Wizard window choose Apply existing license key
• click Next
• click the Browse button
• find the folder into which you unpacked contents of the received archive with a key file where you saved the key file
• double-click the key file
• see the information about the added key file and click Next
• in the last Activation window click Finish
• close the window with the info about the used license keys
• minimize the main application window

The dialog windows for Kaspersky Internet Security 7.0 and Kaspersky Anti-Virus 7.0 are the same but with corresponding dialog windows and the number of Protection components.