Hi, well for the second time in 9 months my sons PC get infected with the winav.exe trojan/malware thing, where a bogus antivirus program pops up that your PC is infected and the security center is removed from control panel, a bogus red security aleart is in the intray and WinAntiVirus Pro appears to have been installed. It's just plain annoying, and I rolled the PC back to a couple of days ago and all was fine, then ran a full AVG Free check, Spybot & windefender check. I also run the resident Spybot process, blocked hosts entries etc etc. ran windefender too. I think my son got this from following a link from a web page - OK not always a good idea, but heh, we've all done it. Anyway , is there a suggested way to block these kinds of drive-by infections ? I've kind of got into the habit of using free software for AV, and would prefer to keep it that way if possible. I think his IE is locked down, would firefox be more resistant ?