Activate your kaspersky 2011 with key file
1. Disable/Unplug your internet connection.
2. Click for trial version or enter this Bad code
3. Kaspersky will show you an error.
4. A new window will appear with key file browsing option.
5. Select your key from browsing window.

Link:
http://hotfile.com/dl/113112267/59e847d/(04_mar_2011).rar.html