Additionally:

Have a look at Win32::OLE (e.g., create a shell, and execute commands)

Have a look at Win32::Perms (http://www.roth.net/perl/perms/) -- although it is dated 2002. (This module is discussed here: http://www.perlmonks.org/?node=win32%3A%3Aperms )

Roth has another book, "Win32 Perl Scripting: Administrator's Handbook," which may be more suitable to your tasks.