My dad bought my mom a Mac Airbook for Christmas and one of my siblings helped her transfer the files over from her PC, but erased some files on the PC in the process.
My mom hasn't created or modified any files since she discovered that some of these files got erased. How do you recover this stuff? I've heard that even when you "delete" a file, it really isn't gone, that computer forensic people can find this stuff. So how do regular joe's do this?