#!/usr/bin/perl -wl

    use strict;
    use Date::Calc 'Add_Delta_DHMS';

    my $vt_filetime = '126697423010137600';

    # Disregard the 100 nanosecond units (but you could save them for later)
    $vt_filetime = substr($vt_filetime, 0, 11);


    my $days  =  int(  $vt_filetime               / (24*60*60) );
    my $hours =  int( ($vt_filetime % (24*60*60)) / (60*60)    );
    my $mins  =  int( ($vt_filetime % (60*60))    /  60        );
    my $secs  =        $vt_filetime %  60                       ;

    my @date = Add_Delta_DHMS(1601, 1, 1, 0, 0, 0, $days, $hours, $mins, $secs);

    # Format @date as you wish
    print "@date";


    __END__
    Prints:

    2002 6 28 12 51 41