Silent-Mode with Outlook 2003?

Whenever I get a virus-Mail an Avast-Window pops up and asks me what it should.
Since this is very anoying, I’d preferr if Avast would simply delete the mail without asking. I switched on the silent mode in all categories of the on-demand scanner (Mail, Outlook/Exchange, Standard protection) but without any change. :frowning:
I searched this forum but didn’t find any answer instead of turning on the silent mode, which I already tried.
Can anyone help me ???

See, I have the same problem:

http://forum.avast.com/index.php?topic=7544.msg60233#msg60233

Cheers,
McoreD