Fantastic Folded Cards & Boxes! From Teresa Welch comes a DVD containing 100 different cards and boxes with 7 hours of video for each to guide you through the scoring and folding process. More new and fun ideas for all of your card and box making needs. The DVD is for computer use only, it is compatible with Windows Vista, Windows XP, Windows 7, and Macintosh OS X (10.5 and up Intel only). You will need to install Adobe Reader to view the DVD content. HOTP has included that program on board the disk for your convenience. When you insert the disk it will guide you through the easy installation.