The DVD is listed as region 0 (region free), which means that it should play on your computer DVD drive. There are ways to copy the PAL video to your hard drive, convert it to NTSC, and burn it to DVD, but I won’t go into any details about that since it can be used to make illegitimate copies. I assume having one backup copy would be permissible, though.
(I’m not a copyright lawyer, so I may be wrong).