This is not documented at all, but I did discover that the correct command line parameters are:
"C:\Program Files\AntiVir PersonalEdition Classic\avscan.exe /GUIMODE=2 /PATH="C:\File.exe"
If GUIMODE is set to 1, the full window will appear for each scan. If GUIMODE is set to 2, a smaller window will appear, and will disappear when the scan is finished.
I haven't been able to test it yet, but I assume for WLM, you must use:
"C:\Program Files\AntiVir PersonalEdition Classic\avscan.exe /GUIMODE=2 /PATH="%1"
but I'm not 100% sure. Test it yourself
