George, Just for the sake of clarification, regional code and PAL/NTSC are two seperate issues. The DVDs being sold on Ebay have no regional code and can be played in all regions. They do, however, require a player that is capable of playing PAL format which most U.S. players will not do. Also, most U.S. TVs will not support PAL making the DVDs useless for those systems.
Pllaying them on the computer is another story and I have no knowledge regarding that matter. Since you are able to play it on your computer then it seems that the DVDs can be used here. It might also be possible for you to put out an NTSC siignal and copy it onto tape. I don't know. I don't have any of that new-fangled equipment.
Ken