In future - please post question in the body of the message.
In answer to your question -two options
#1 - Save your worksheet as a CSV file or....
#2 - Save your worksheet as an Excel 97-2003 xls file
Either one of the above can be imported by Outlook
Karl
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Karl Timmermans - The Claxton Group
ContactGenie - Importer 1.3 / DataPorter 2.0 / Exporter
"Power contact importers/exporters for MS Outlook '2000/2007" http://www.contactgenie.com