Hi. I'm using Nero 7 Essentials and Staples brand DVD-Rs. I clicked on 'Make Your Own DVD-Video' and everything worked hassle free. I imported a Windows Media Movie file, customized the Menu, and burned the DVD-R in NTSC format. Is said the DVD burned successfully, and ejected the DVD-R. Then, when I put the DVD-R back into my computer, nothing happened. So then I took it out and put it in two different DVD players (a Sony and Samsung). Both players said the disc was in the wrong format. Am I using the wrong type of DVD? Any help will be highly appreciated. Thanks!