What calendar?  Outlook Express has no calendar.

For help with Outlook, try one of these newsgroups:

news://msnews.microsoft.com/microsoft.public.outlook
news://msnews.microsoft.com/microsoft.public.outlook.Calendaring
news://msnews.microsoft.com/microsoft.public.outlook.configuration
news://msnews.microsoft.com/microsoft.public.outlook.Contacts
news://msnews.microsoft.com/microsoft.public.outlook.Fax
news://msnews.microsoft.com/microsoft.public.outlook.General
news://msnews.microsoft.com/microsoft.public.outlook.installation
news://msnews.microsoft.com/microsoft.public.outlook.interop
news://msnews.microsoft.com/microsoft.public.outlook.printing
news://msnews.microsoft.com/microsoft.public.outlook.Program_AddIns
news://msnews.microsoft.com/microsoft.public.outlook.program_forms
news://msnews.microsoft.com/microsoft.public.outlook.Program_VBA
news://msnews.microsoft.com/microsoft.public.outlook.ThirdPartyUtil