use strict;
use Win32::OLE;

my $PR = Win32::OLE->new('DSOleFile.PropertyReader', 'Quit');
my $filename = "c:\\test.doc";

my $prop = $PR->GetDocumentProperties($filename)
        || die("Unable read file properties for '$filename' ", Win32::OLE->LastError());

$prop->SetProperty('title', 'My Title');   
$prop->SetProperty('subject', 'My Subject');   
$prop->SetProperty('author', 'My Author');   
$prop->SetProperty('manager', 'My Manager');   
$prop->SetProperty('company', 'My Company');   
$prop->SetProperty('category', 'My Category');  
$prop->SetProperty('keywords', 'My Keywords');  
$prop->SetProperty('comments', 'My Comments');