Book type and cdr.iso to DVD?

Hi, i have to questions:

  1. Whats the point of changing book type for DVD media? Like from DVD+R to DVD-ROM.

  2. Is it possible to burn CD iso image (700MB) to DVD disc?

Thank You.

  1. More compatability with DVD players. Not so much of an issue these days.

  2. Yes , but depending what the image was for you may or may not have success on playback. ImgBurn should convert the format on the fly for you.