This method is applicable to 32-bit versions of Windows XP/Vista only.

Some errors might occur when deleting Kaspersky Anti-Virus product via Start > Control Panel > Add\Remove Programs. As a result the program will not be uninstalled or will be partially uninstalled. 
Removal utility allows uninstalling the following products: 
Kaspersky Anti-Virus 6.0\7.0\2009 
Kaspersky Internet Security 6.0\7.0\2009
Kaspersky Anti-Virus 6.0 for Windows Workstations 
Kaspersky Anti-Virus 6.0 for Windows Servers 
Under 64-bit OS’s the removal utility can uninstall Kaspersky Anti-Virus 2009 and Kaspersky Internet Security 2009 only. 

In order to fully uninstall the product: 
Download the archive KAVremover.zip
Unpack the file KAVremover9.exe from the archive
Run the file KAVremover9.exe
Enter the code from the picture
Click the Remove button
Wait until a dialog window informs you of successful product removal
Click OK

Reboot your computer
If by some reasons the remove utility has not found the installed product in the OS and you are sure the product is installed and/or some modules still remain, then to skip product check, run the utility from the command prompt with the following syntax kavremover9.exe [kav6 | kav7 | kav2009 | kav2009x64| kis6 | kis7 | kis2009 | kis2009x64 | kav6fs | kav6wks]. For example if Kaspersky Internet Security 2009 was installed on your PC in this case the command will look the following way kavremover.exe 2009.