Hi, this can help you...

use OLE;
use Win32::OLE::Const 'Microsoft Word';
my $const = Win32::OLE::Const->Load("Microsoft Word 9.0 Object Library
+"); # 9.0 for word2000, 11.0 for word2003 or XP

$word=GetObject OLE("Word.Application");      ### To access the active
+ Word Document

$word->Selection->HomeKey ({unit=>$const->{'wdStory'}});

&WordReplaceAll('find', 'replace');

sub WordReplaceAll
{
    my($FindText,$ReplaceText)=@_;
    for ($word->Selection->Find)
    {
        $_->{'Text'} = $FindText;
        $_->Replacement->{'Text'} = $ReplaceText;
        $_->Execute ({Replace=>$const->{'wdReplaceAll'}});
    }
}
[download]

regards,
Franklin