I have tried installing kis7.0.0.125en with the following method and it works fine

1- extract kis7.0.0.125en.exe to get the msi file ( I use universal extractor or you can run the .exe file amd get the .msi file from your temp folder - usually C:\Documents and Settings\UserName\Local Settings\Temp )
2- copy the .msi file to your test folder e.g. c:\temp
3- put your Kaspersky 7 License key ( if you have ) in the same folder with the .msi file
4 - run the msi file with

c:\temp\kis.msi /qb /norestart

this will install the application and will not restart the pc even the program will not start until you restart your pc

Am I the only one who test that ?

I believe there's a couple of other topics describing this method already. And yes, it's still applicable for 7.0.0.125, nice and easy to wrap up in a smart SFX archive for easy deployment

yep, the 7.x installers support this method now.
If you want to include your license file, put it in the same dir as the .msi-file and Kaspersky will automatically use it.

Kaspersky-setup will not restart your machine and the program itself will not start, until you have rebooted, so finally an easy way to install this.