reoccurring meetings - meeting room problem

[Bob Smith]

We are running Exchange and Outlook 2003 and have some meeting rooms setup to
Auto Accept meeting request, declining reocurring meetings. This seems to
work fine. If an individual selects the room as a resourse. The user gets a
popup stating that they can't booka reoccuring meeting. Which is what we
want!

The problem is however that the Default permissions on the meeting room
calendar is "Author" for it to work. This gives the users the ability to open
the calendar directly (File>Open>Other Users Folders) and book a reoccuring
meeting directly.

Is there a way to stop them doing this?

Thanks for your help