I don't know about "Netzip" but I have XP and all I do is click onto the "zip" file and see what is in there. Then I copy it from there.........Not unzipping........but "edit" "copy all" and then create a new folder called what-ever and then I paste it all in there. From there I put the files where they need to go. I don't know if this is the easiest way to do it, but I save all my "zip" files to an external hard-drive, so when I want to use them, I load them this way.