c:\test>perl
use threads;
use Win32::OLE;
use Win32::OLE::Const 'Microsoft Excel';
No type library matching "Microsoft Excel" found at - line 3
Win32::OLE(0.1702): GetOleTypeLibObject() Not a Win32::OLE::TypeLib object at 
c:/Perl/site/lib/Win32/OLE/Const.pm line 45.
^Z

##</code><code>##

require Win32::OLE::Const;
Win32::OLE::Const->import( 'Microsoft Excel' );
^Z
No type library matching "Microsoft Excel" found at - line 2
Win32::OLE(0.1702): GetOleTypeLibObject() Not a Win32::OLE::TypeLib object at 
c:/Perl/site/lib/Win32/OLE/Const.pm line 45.