Spreadsheet Excel Writer In PHP

Spreadsheet_Excel_Writer In php
it easy way to generate xls file from php
u can donwlod here

http://pear.php.net/package/Spreadsheet_Excel_Writer/download

Spreadsheet_Excel_Writer saving issue
I know how to use Spreadsheet_Excel_Writer for generating excel files. The excel is generated in Excel 97 format. The issue I'm having is that if you open the excel file, then attempt to do a Save, it tries to save it as an Excel 95 format by default. Is there any way to make it save as Excel 97 by default?
Have you tried to call setVersion? (=> see the manual for more details about it)
Thanks. Found out i need to use setVersion(8).