I have a folder of all my very important documents (i.e. ones I would really really not want to lose). Due to the recent demise of my external hard drive, I now am considering having the primary backup be a DVD-RW, and the secondary my creative zen xtra's hard drive. In fact ideally I would not want to have the whole folder be on the internal hard drive at all. So my thought is to have 3 copies - a DVD-RW, a DVD-R and the mp3 player.I have two DVD-Drives (one a combo drive, and the other a burner), so is there any software that would be able to synchronize the folder between the DVD-RW and the DVD-R? (I am assuming synchronizing with the mp3 folder would be not possible very easily).Or really, feel free to suggest some other way of backing up.