Saving Reports to Excel - .xlsx vs .xls

Does anyone know if it's possible to change the version of Excel that reports save as? (I.e. so that it's a one step process to have it as an .xlsx file)

When we save a report to Excel it saves in the 97-2003 .xls format. It would save steps and make certain users thrilled if it were possible to save it as a newer version. I do understand the reasons for it defaulting to the oldest possible, for compatibility.

Thanks!

Stacey Voigt
Database Manager
Santa Barbara Center for the Performing Arts
svoigt@granadasb.org