add this to blocked zip.exe?

Hi,I recieve Fred Langa’s newsletter here is a suggestion to help deal with the new zip file viruses, I haven’t tried it with avast yet, will this work?

  1. Making Sure Your Antivirus Tools Can Work Inside Zips

This excellent tip was posted on the “Bugtraq” mailing list; it helps AV
tools block the content of password-protected Zip files like the
malicious one discussed in the previous item:

 With the release of Beagle.H and Beagle.I, virus writers
 started enclosing the infected files within password protected
 ZIP files... I've found that the A/V software does see the
 file within the ZIP archive, but cannot process it because it
 does not recognize the extension.  When the archive is
 password protected, the file enclosed receives a "+" character
 at the end of the extension (ie test.exe becomes test.exe+)
 Since the A/V software doesn't recognize that kind of
 extension, it lets it pass thru.
 
 I found that by adding the "+" character to file extensions
 that are blocked (.exe+, .cmd+, .vbs+ etc etc), the A/V
 software can now recognize that file extension and perform the
 necessary actions on it.
 
 I've only tested this out on Norton Anti-Virus for Exchange
 V2.1, but it should work on the other A/V software programs. -
 --Mike Maloney, Sr. System Engineer, Middlesex County College

It seems this isn’t working in avast…

Hey RejZoR, Hopefully it will work with avast in the future?
also your second link in your signature does not seem to work?=
My program: avast! External Control Tool

As I already said in another thread today, the original message is complete nonsence.
AV Software doesn’t have any troubles in seeing the file - it just can’t unpack it, because the file is password protected. Adding a +, or whatever other sign into some configuration certainly won’t change anything about it.
The name of password-protected files is also not changed in any way.

I don’t know if the + sign has any special meaning in NAV for Exchange configuration (such as blocking given file types completely, without checking anything else), but in general I’d suggest to ignore the message.