I can't see that working on XP myself - sure isn't there no DOS prompt possible in XP?
Anyway, I was looking for something myself recently, and remembered something I used to use ages ago - "RJH Extensions". Pop that into Google and you'll find this site
http://www.rjhsoftware.com/rjhextensions/
It has a few other useful features also, and is incorporated into the right-click menu. And it's free.