Where do I put the code/key for avast?

I have a code, but I cant find the page to put it on?

http://www.avast.com/eng/free_virus_prot...

Where do I put the code/key for avast?spyware remove

serials.ws

Where do I put the code/key for avast?virus protection

hey ,

having trouble with activation

check this might help

http://support.avast.com/index.php?_m=kn...

good luck