Can you go back to the retailer and download them again? That would be the easiest solution.
As for recovery, do you still have the hard disk from the old computer? Is the directory structure intact? In particular, are the Windows and MSReader folders still in the same location?
If so, then ConvertLIT might still work for you. It extracts the device id key needed to remove the DRM. Once you have the key, you are okay.
|