The mentioned file (avewin32.dll) contains uncrypted samples of viruses - so I'm afraid the only solution is to put this file into the list of Standard Shield exclusions.
Thanks igor,
for the info..
I even managed to make the exclusion work by using
*\avewin32.dll
(excluding the AVPE-Update/Temp folder
C:\Dokumente und Einstellungen\All Users\Anwendungsdaten\AntiVir PersonalEdition Classic\*
somehow didn't work for me)