Just as a trial, I used AnyDVD 188.8.131.52 to copy Saving Private Ryan to my hard drive.
I then used DVD Shrink and Nero to burn the copy using my Sony DRU-510. Long process, but it worked. The copied disk plays perfectly in my Sony-510 as well as my Sony DVD player attached to my home theater setup, but will not play in the DVD player on my Dell Inspiron(from which the copy was made to the hard disk). It is set to Region 1, which is correct. The DVD player in the Dell is listed as: HL-DT-ST GDR 8081N in device manager, whatever that means.
This is a non-critical problem, but is intellectually annoying. Does anyone have a clue what is going on?