Has anyone had any real luck with using DVD-RW to test this stuff. I can use the media once and then it appears one cannot overwrite it. Therefore I have some -RW coasters and ALOT of -R coasters. I would prefer not to continue wasting disks. They get damn expensive at $2 each.

I understand there are some built-in formatting tools in programs such as Nero and the like. I can't get any of it to work. Does anyone hahve any suggestions on formating my once-written DVD-RW coasters so that they can be written to all over again?