{C} > ver

Microsoft Windows XP [Version 5.1.2600]

{C} > perl -v | head -8

This is perl, v5.10.1 built for MSWin32-x86-multi-thread
(with 2 registered patches, see perl -V for more detail)

Copyright 1987-2009, Larry Wall

Binary build 1006 [291086] provided by ActiveState http://www.ActiveState.com
Built Aug 24 2009 13:48:26

{C} > perl -V | grep threads
    useithreads=define, usemultiplicity=define