This looks like a Windows VT_FILETIME data type which is a 64 bit unsigned integer representing the number of elapsed 100 nanoseconds since 1 January 1601. A quick check with bc seems to put it in the right ballpark (omitting leap-days):

    $ bc

    2002-1601
    401

    401*365*24*60*60*10^7
    126459360000000000
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There are functions to do this conversion buried in the internals of OLE::Storage and OLE::Storage_Lite and perhaps in some other Win32 modules as well. But you could roll your own conversion with Date::Calc:

    #!/usr/bin/perl -wl

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

    my $vt_filetime = '126697423010137600';

    # Disregard the 100 nanosecond units (rounding might be better)
    $vt_filetime = substr($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, $min
+s, $secs);

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


    __END__
    Prints:

    2002 6 28 12 51 41
[download]

--
John.