Help me get the licence of Kaspesky Internet Security 2011

I recently bought Kaspersky Antivirus 2011, but mistakenly I upgraded that version to Kaspesky Internet Security 2011. Is there any way to reverse that?

I have also the license key of Kaspesky Internet Security 2011. Is there any way to activate the Anti-Virus without using online activation? Plz, help me.