Register Avast Antivirus until 2038 for Free

HOW DO I GET THE LICENSE KEY THAT IS VALID UNTIL 2038?
1. Quickly download Avast Free Antivirus 6.0
2. Use following activation key which is valid until 2038. However, use the key as soon as possible because Avast may block this leaked serial key code.
NOTE THAT: The license key is valid to activate Avast v4.8, Avast 5, and Avast 6.0.
and it is for non-commercial usage only

Avast License Key Valid until 2038 :
W6754380R9978A0910-4TZ59467

YOU CAN ALSO USE THESE LICENSE KEYS VALID FOR ONE YEAR
W38238872H4200A1106-J8NESC6V
W36084977H3000A1106-D0CFW519

Here is a link for the free version:
http://download.cnet.com/Avast-Free-Antivirus/3000-2239_4-10019223.html