I am useing Windows XP Pro with Service Pack 2.
I do not use a software firewall but a router is installed.
I use Ad-Aware SE Personal and SpyBot regularly.
I had Norton antivirus on my machine but deleted it before installing avast. I still have Norton Sytemworks installed with the antivirus portion removed beforehand.
And, Yes I had several "infected files" and moved them to the Chest