I posted a couple of posts down about not being able to play movies on my laptop. I have the AC3 filter installed. I downloaded the VLC player (which supposedly plays anything). Tried the K-lite mega codec pack, and the Intervideo WinDVD. Still getting this message that Windows doesnt recognize the format and the disk may be corrupt or the wrong format. Grrrr I don't know what to do next, running out of options. This only happens with movies that I have burned and not data DVDs. The movies play fine on my Dell desktop and on our home DVD player. There has to be a solution.