I had copy protected recordings on my computer from Windows Media Center. I had to reinstall Windows and now none of those recordings are playable on my computer. If I transfer Tivo recordings to my computer do they face the same type of fate? I have the following questions: 1) If I store non-copy protected OR copy-protected Tivo files on my computer can I watch them on it forever without them one day not working due to a computer software/hardware change OR a DRM time limit? 2) Can I store them forever and then transfer them back and watch them on the Tivo? 3) Can I do all this while storing them on an external hard drive?