I have a PC with Vista Windows. I've been using windows word typing. I have a new laptop with Windows 7. From the PC I put all the windows typing on a blank DVD, so I could go back and forth on the computers. All of a sudden my files are "Read Only" so I can't make any changes to files. I know I'm a dope on computer but I don't think I did anything wrong. HELP!! STEP BY STEP!! THANK YOU!!