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Do one of the following:
HideImport Outlook Express contacts into the Outlook Contacts folder
In Outlook, on the File menu, click Import and Export.
Under Choose an action to perform, click Import Internet Mail and Addresses.
Under Select the Internet Mail application to import from, click Outlook Express 4.x, 5.x, 6.x.
Clear the check boxes for Import Mail and Import Rules. Only the Import Address Book check box should be selected.
Click Next.
Select one of the following:
Replace duplicates with items imported Existing data will be overwritten with the information in the file that is being imported.
Allow duplicates to be created Existing data will not be overwritten, and duplicates will be added to the current Outlook folder.
Do not import duplicate items Existing data will be kept, and the duplicate information in the file will not be copied to the current Outlook folder.
Click Finish.
After the export is complete, click Save in Inbox if you want a message in your Inbox that logs what was exported, or click OK.