i used symantec ghost 6.5 to image a hard drive. i then reformatted the first hard drive and reinstalled OS and applications. then copied data from the imaged hard drive to the original. it was at this time i discovered that although all files and folders were created on the image, the data in them is corrupt. document files open up and all of them just show rows of r shaped letters. images open up blank, or give error message stating "not a valid .jpeg file". i am desperate to recover this data. any suggestions?