I have a DVD I need to salvage if possible. My kids have managed to scratch it (but it doesn't look horribly scratched, just superficial scuffs). I have heard there is programs that allow one to extract the infomation so I can record it (or just view it on my computer). I can watch about 2/3rds of the disk without problems then it starts lagging and eventually stops (and locks up). I have tried numerous players from my home tv dvd player to my two dvd players (one is a recorder) on my computer. All sources lock up about the...