There is a way of cramming more data onto a CD-R by means of DVD writers that support this mode. This is actually the reverse of what you are asking, but I suspect it might be the basis of the article you saw?
Did a search on the web, found this on another forum:
"is there a way to make your computer read your cd-rom drive as a dvd drive even though it isn't?"
"What do you mean -- do you want to read DVD discs with your CD-ROM drive? If so, unfortunately it's not possible, since these two technologies are pretty far from each other even that their discs look the same"