Depends which Application the Data is about, Michelle.
Can you quarrantine them for now, until one of the techies shows up?
I think the problem might be that AVG doesn't support Incredimail, Michelle, therefore your incoming mail is not being checked for viruses. The only solution is to use OE or Outlook, or get another anti-virus program which supports Incredimail. Norton definitely does.
I also thought that you had to open the attachments to launch the virus. Perhaps AVG is detecting that they are present on your system, but haven't actually been activated? Dunno, just guessing.
I now use Pop Tray, which I find better than Mailwasher, as it's free and you can have as many accounts as you like. I've put links to both below for you.
Pop TrayMailwasher