It doesn't look as if MS released a version for Excel 2003. Does the 2002
version install with Excel 2003? If not you might try this procedure which
I know worked with another add-in:
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If you are comfortable with the registry editor (RegEdit.exe from
Start->Run) you can easily fool the installer to think you have Excel 2002
installed.
First create the path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\10.0\Common\InstallRoot
Then create a new String entry under InstallRoot named Path. The value of
Path should be the path to your Office 2003 installation, e.g. C:\Microsoft
Office\Office11\