If you send the updates to the owners of the various calendars and they have
the option set to automatically accept, then yes.

Signature
--?
Milly Staples [MVP - Outlook]
Post all replies to the group to keep the discussion intact. Due to
the (insert latest virus name here) virus, all mail sent to my personal
account will be deleted without reading.
After furious head scratching, MichaelS asked:
| Can this be done in Outlook 2003?
|
[quoted text clipped - 4 lines]
|
| Thanks for your assistance