Have you tried to read them with another system?
I have a HP Slimline running Win7, the hard drive became totally corrupted so I had to format and reinstal the OS. I have a set of backup DVD's with all my files but I can not install them on the HDD, they are not recognized as backup files, even though they were made on the same machine with the same OS. Is there a way to install this backup set?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic