That would depend on whether the client wants their users to be able to
disable the addin in the COM Add-Ins dialog. If so you must register in
HKCU. That can be done by running a logon script that would run the
installer for each user when they log on to Windows if the addin wasn't
already registered. If an admin installation in HKLM it can be run once on
each computer or deployed using SMS or by a logon script.

I would never install in \System32 however, that's bad practice. I would use
a path under Program Files.

An MSI can be run by calling msiexec.exe using the switch for silent
installation if desired.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Absolute Beginner's Guide to Microsoft Office Outlook 2003
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm


"Claus" wrote in message
...
thank you, Ken,

so, how is a Outlook AddIn normaly installed for all users in a bigger
network?
the customer just said, he needs an MSI Installer.
Should an MSI setup, wich writes to HKLM and installs the AddIn-DLL to
let's
say systems32, work, so that the administrator can do the installation for
all users?