When I create backup DVDs I don't use the zip or exe files. I extract or install the item to an aptly named folder and save those folders to DVD. Inside each folder is the Runtime, Readme and the promo images for that item. Reinstalling to Poser is then simply a matter of opening a folder and dragging the runtime over to my poser external runtime of choice. I have found this to be a fast method.Having the promo images with winxp set to show thumbnails makes it easy to identify what you are looking for.