#!/usr/bin/perl
use strict;
use Win32::OLE qw(in with);
use Win32::OLE::Const;
use Win32::OLE::Const 'Microsoft Excel';
$Win32::OLE::Warn = 3;

my $filename = 'c:\\book_with_macros.xls';
my $Excel = Win32::OLE->GetActiveObject('Excel.Application') || Win32::OLE->new('Excel.Application', 'Quit');  

my $Book = $Excel->Workbooks->Open( $filename );
$Excel->Run("MYMACRONAMEHERE");
$Book->Close;