I can answer the first two questions, I think. For Vue (5 or 6) Infinite, it is possible to create vue objects that cannot be exported. This is done via check box available during the process of saving the object. This is not the same as "copy protected vue files." Cornucopia3d web site uses a special process for vendors who wish to submit their models for sale and request "copy protection" for those models. (This request is made by checking a box at during the process of submitting a model to the Store.) But, within any version of Vue, it is not possible for you to create a "copy protected model" yourself. In Vue 5 and 6 Infinite only, it is possible to create a model/object where any textures are incorporated into the object file. This is done via a check box during the save process. Incorporating a model's textures should be done in conjunction with "Use Compressed Mode." By using both, you are creating a special compressed file that is analogous to a winzip file. Can't answer your other two questions, but someone else will be able to do so.