Enable addon with script

HI,

I need to enable the microsoft "office document cache handeler" addon on a few computers.

This are privates computers of a few of my friends and they do not share a domain so i cant use GPO.

I tried editting the registry key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{[addon key]}

Flags = ???

any key but 1 will enable the addon, it's work great for windows server 2008 but for win 7\8 enabeling meaning deleting the key and even if i do that manualy the addon will receive status "New" instesd of "Enabled".

thanks