To use the Visual Reports feature:}- In Control Panel, double-click Regional and Language Options. In Windows XP and Windows ...

{To use the Visual Reports feature:}- In Control Panel, double-click Regional and Language Options.  In Windows XP and Windows 2003, on the Advanced tab select  the same language as Microsoft Project 2010 in the list under the Language for non-Unicode programs.  In Windows Vista, on the Administrative tab select Change Settings.  Then select the same language as Project 2010 in the list under the Language for non-Unicode programs.
- To create a report in Microsoft Excel, you must have Excel 2003, 2007, or 2010 installed in the same language as Project 2010.
- To create a report in Microsoft Visio, you must have Visio Professional 2007 or 2010 installed in the same language as Project 2010.
- To save a cube, you must have the above mentioned version of either Excel or Visio intalled in the same language as Project.