Gem to open office 2007 xls in older version office


Hello Friends,

In my rails application i have to open office 2007 spreadsheets in the
older versions of open office ex.2003.

Is there any gem or plugin to do the same. Or the gem/plugin which
converts office 2007 xls files in the older version so that these can be

any suggestions will be greatly appreciated.

Thanks and Regards,