I've never used this feature, but I did find instructions
about system requirements:
<< System requirements
In order to enable the right-to-left features in Microsoft
Office 2000, you must be running a 32-bit Microsoft
Windows operating system that has right-to-left support -
for example, the Arabic version of Microsoft Windows 95.
Learn about requirements for right-to-left languages.
Note Not all of the programs in Office 2000 support each
right-to-left function or feature described in this topic.
For specific procedures, see Help for the program you are
using. >>
Since I searched for "right to left" directly in Excel, I
assume it must work there. And in fact, here is the Excel-
specific information:
<<Use right-to-left charts and maps
Language-specific information
To enable the right-to-left features in Microsoft Excel,
you must be running a 32-bit Microsoft Windows operating
system that has right-to-left support - for example, the
Arabic version of Microsoft Windows 95.>>
Hope this helps.