Can someone explain the advantage to developing as VSTO Addin vs an
Extensiblity Addin? My target production environment has User's that
do not have admistrator rights to load a VSTO Addin and it is my
understanding that the VSTO Addin can only be loaded and work for the
"Just for Me" option that puts the registry setting in
HKEY_CURRENT_USER.

Is there a way to get the advantage of the shim that is built into
VSTO Addin's for the "Everyone" option (writing keys in
HKEY_LOCAL_MACHINE)?

Thank you for your time.

-Morna