Open your .xls file in Excel 2007, save the file as an Excel 2007 file type
(.xlsw, .xlsx, etc) using File Save As. Close the file and reopen it you
should now have 2007's 1M+ rows available.
Open your .xls file in Excel 2007, save the file as an Excel 2007 file type
(.xlsw, .xlsx, etc) using File Save As. Close the file and reopen it you
should now have 2007's 1M+ rows available.