In Excel 2007, click the Office button (the big round button in the top left
of the window) and choose Excel Options at the bottom of the menu. There,
choose the Save page and uncheck the "Save auto-recovery" option in the
"Save Workbooks" section of the page.
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Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting www.cpearson.com
(email on the web site)