Yes.
The file you need to back up is your Personal Folders file (*.pst) It's
where all the mail, calendar, contacts etc are stored.
Take a look at these pages for info on Outlook data backup:
http://www.slipstick.com/config/backup.htm
http://www.howto-outlook.com/Howto/backupandrestore.htm

Signature
Russ Valentine
[MVP-Outlook]
> I'm upgrading my Office 2000 to 2003 this weekend and I know that my
> Outlook Contacts and other Office data is all in one big file.
>
> Trouble is, I can't remember the file extension.
>
> Is it .pst for Office 2000, please?
Brian Watson - 16 Feb 2005 19:21 GMT
> Yes.
> The file you need to back up is your Personal Folders file (*.pst) It's
[quoted text clipped - 3 lines]
> http://www.slipstick.com/config/backup.htm
> http://www.howto-outlook.com/Howto/backupandrestore.htm
Thank you, Russ.

Signature
Brian
Yes
> I'm upgrading my Office 2000 to 2003 this weekend and I know that my
> Outlook Contacts and other Office data is all in one big file.
>
> Trouble is, I can't remember the file extension.
>
> Is it .pst for Office 2000, please?
Brian Watson - 16 Feb 2005 19:23 GMT
OK, thank you.
> Yes
>> I'm upgrading my Office 2000 to 2003 this weekend and I know that my
[quoted text clipped - 3 lines]
>>
>> Is it .pst for Office 2000, please?