That's up to you. Find some way to get every user on that system and log in
as that user and register the addin in that HKCU or find some other way of
doing it. Not really an Outlook question and not one I've ever bothered to
investigate.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm


"MON205" wrote in message
...
"nless you install it in HCKU for every user"... I think here is the
point..
But how can I do that?