No-one has implemented this as yet in Perl AFAIK. This module allows you to read this information: Win32::File::Summary and the author has implement write capability on his todo list. You would need to use WinAPI calls I think which is not easy in Perl. This article (non-Perl) may be of interest: http://www.howtodothings.com/computers/a1061-give-me-the-details-or-file-summary-info.html