I'm trying to play my DVDs on a windows 2000 computer using windows media player 9, but I can't quite get it to work. I have cyberlink's DVD decoding codec and an AC3 audio codec (from the K-Lite Codec pack), and I have applied the registry tweak here: http://www.winguides.com/registry/display.php/717/ Nevertheless, WMP9 won't open a DVD when I choose "open" and click on the DVD drive. It opens the disc and sees the directories, but it won't recognize any .vob files as movie files. What am I missing, here? Is there a specific codec I should be looking for, or do I need to do more registry editing? Also, do I need to install WDM drivers for my Radeon vid card? If somebody has accomplished this and can walk me through it, I would appreciate it. Thanks.