I recently found <A target="_blank" HREF=http://www.intervideo.com/jsp/Home.jsp>WinDVD</A> form Intervideo, and an finally able to play DVD movies on my 2-year-old NT 4.0 laptop. The drivers that came with it worked on data DVDs and on CDs but wouldn't play at all on movies. I did have to download Intel's Ultra ATA Storage Driver as well (NT 4 requirement only), which smoothed out some minor hitches in the display.