Without seeing the precise configuration, it is difficult to tell, but my best advice to try is to go to Tools --> Options in Outlook 2000, select the "Mail Services" tab and click the "Reconfigure Mail Services" button. If the "Internet Mode" radio button is not selected, switch to it and the DLLs that support IMAP will be installed. Again, this is just a first guess with limited information. If you are dealing with Outlook XP, or you are already in Internet mode in Outlook 2000, then I would have to see your actual configuration to be of any more assistance.
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