in reply to Advice/help with beginner script (file sorting, execute command line command)

As much as I love Perl, since you're on a Windows 7 box, I would highly recommend using Power Shell. All of the functionality you describe can be done with native methods in PowerShell, and arguably can be done faster than a Windows compiled Perl could. You've come to the right place if you really want to do it in Perl, but it might be worth considering