Mac Forum / Applications / Internet Explorer / March 2007

I have always used OE 6 as my default e-mail program.  Yesterday, all contact
information vanished from my address book (.WAB).  Today, I discovered that
Outlook has become program for newsgroups, contacts, and calender. ( By going
to Tools Programs).  

I changed the contact and newsgroups back to OE, but there was no other
option to change Outlook from Calender.  Outlook is the only option.

1.  How do I change calender program back to OE?
2.  Outlook does not have any contact information in its address book.  Any
ideas where I might find them.  I have searched and found all .WAB files.  
All were empty.

Thanks