=====Add domains to the Per Site Privacy Actions page of the Privacy tab=====
To always allow or block regardless of privacy policy.
<code reg>
Windows Registry Editor Version 5.00

// Always allow
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History\domain.com]
@=dword:00000001

// Always block
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History\domain.com]
@=dword:00000005

</code>