Protecting NOD32.EXE

Hi,
As expected, some (claim themself) anti-malware programs delete NOD32.exe.
How can I protect NOD32.exe from such deletion?

I assume NOD32.exe can be deleted/modified by other defined threats. But the best way to protect the integrity of the file, NOD32.exe is using password.

I lookes through the NOD32 2.70.xx interface but it seems to have password protection features to protect the configuration.

How can I make NOD32.exe being undeleted by such threats or ignorant anti-malware software.
(I also contacted the Anti-malware company, but they do not response...)

 

Personally i use defensewall to secure my AV files from being tampered with.