I know Bruce explained to an earlier message that this is not necessary (see
below)....but is there any chance that I could infect someone else if I just
forward an e-message with an infected attachment ie before its been saved to
my hard drive?

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Leave it off, but............

Reinstall AVG and choose Custom Mode. Uncheck E-mail Scanning when you see
that option. Just unchecking it in the AVG Security Center usually causes a
conflict with the Windows Security Center.

Turning off e-mail scanning is safe. See:

Viral Irony: The Most Common Cause of Corruption:
http://www.microsoft.com/windows/IE/...ion.mspx#EOAAC

Why you don't need your anti-virus to scan your email:
http://thundercloud.net/infoave/tuto...ning/index.htm

Turn off email scanning in your antivirus softwa
http://www.oehelp.com/OETips.aspx#3

And this is from Symantec, but applies to all anti-virus programs.

From:
http://snipurl.com/bmf6

Is my computer still protected against viruses if I disable Email Scanning?

Disabling Email Scanning does not leave you unprotected against viruses that
are distributed as email attachments. Norton AntiVirus Auto-Protect scans
incoming files as they are saved to your hard drive, including email and
email attachments. Email Scanning is just another layer on top of this. To
make sure that Auto-Protect is providing the maximum protection, keep
Auto-Protect enabled and run LiveUpdate regularly to ensure that you have
the most recent virus definitions.