Sounds like you have a default calendar (the one that won't allow you to
delete) and a user created calendar (that will allow you to delete). You
will need to move all of the items from the user created calendar to the
default calendar and then delete the user created calendar to get one
calendar.

But before you do that, do you have more than one mail store (Exchange and
..pst for example)?

--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact.
ALWAYS post your Outlook version.
How to ask a question: http://support.microsoft.com/KB/555375


After furious head scratching, Bob asked:

| Using Outlook 2007. I have two calendars listed in my navigation
| pane. I want to delete one of them. The one I want to delete does
| not offer "Delete Calendar" when I right click on it. The one I want
| to keep does offer this option. How do I delete the one I want to
| delete (that won't allow me to delete it) and keep the one I want to
| keep (the one that will allow me to delete it)?