Sorry for the cryptic post earlier.

OS: Win XP Home Edition

Avast: 4.1 Home edition, Build: June 2004 (4.1.418)

VPS: Compilation date: August 20, 2004, File version: 0434-2

Mail client: Outlook express 6

When does the error occur: When I scanned my hard drive, when I scanned inbox.dbx

Error message:
8/21/2004 6:02:55 PM COMPUTER/USER 3324 Sign of “Win32:Beagle-gen1 [Mail]” has been found in “C:<path>\Microsoft\Outlook Express\Inbox.dbx” file.

What I did:

Asked Avast to repair the file

Error:

The file was not repaired. Cannot process \inbox.dbx file.

Regarding your suggestion, thats the first thing I thought but I do not want to delete my mailbox because I have some important e-mails in them. So what I want to know is how can I use avast or any other program to determine which e-mail message is infected and how can I remove the particular e-mail message instead of deleting my entire inbox.