issue with export in XLSX format

Hi,

From ALV grid I am trying to downlaod the report in XLSX format in Windows 2007. In "Select Spreadsheet" I choose option: "10-Excel (in office 2007 XLSX format), subsequently another dialog "Save as" is displayed. Here "Save as type" is deafulted as "XML file nm. (*.xls) and in the dorpdown no other options are displayed.

Now how to default "XLSX" in "Save as Type" field of dialog box: :Save as?

My basis componenet release - 7.02.

Highest support package - SAPKB70207.

I have digged deeper in the google, SDN browser & SAP marketplace but in vain.

Thanks,

Murali.