I have a great problem:

when my Zonealarm scans for virus it finds a virus called "Trojan-PSW.Win32.Agent.qdy" in my Outlook PST-file.
(This file is called "outlook.pst" and it contains all my Outlook-2007 contacts, emails and whatever belongs to it.)

Then Zonealarm put the file in quarantine.

From now on (that is logical) I cannot access anymore to my saved Outlook-emails and contact because the "PST-file" is in quarantine.

Then I tell Zonealarm to repair the PST-file (in my German version of ZoneAlarm called "recover, rebuild").

Now everything seems to be O.K. and Outlook 2007 is running well.

But the next time I make a virus-scan, Zonealarm discovers again the virus "Trojan-PSW.Win32.Agent.qdy" and puts it into quarantine and I cannot use my Outlook-data anymore.

How can I find out the infected email (or whatever it is) and just delete this special infected email and not the whole PST-file to save all my data

What can I do?