Problems with Calendar

Hi,
I have a problem with Outlook 2003 Calendar.

At the beginning, when I click on "Calendar", in the top-left frame were
shown a calendar, with the current month and 2 or 3 months later.

Now, if I click on "Calendar", in the top-left frame are shown only two
options: "Open shared Calendar" and "Share personal calendar".
If I want to have the calendar of the current month like I have
descrived above, I have to go to "Outlook Today" and click on "Calendar".

How can I switch back to see in the top-left frame the calendar of the
current month?

Thank you.