Oh, hello... I'm Pedru and I'm new here...
Well, while I was makin' tests with another antiviruses, I've found a site that have a lot of virus' informations! They've files of viruses in order and the Avast! Team could see those viruses and increase Avast!'s database...
Well, there it goes: hxxp://vx.netlux.org/vl.php
Be carefully to enter in this site... Some viruses/trojans there Avast! does not detect.