I have a lite on 52x CD ROM drive and im running Windows XP Professional. Everytime i try to copy files off a CD in the drive it gives me this message: Invalid MS DOS Function! And the theres an ok button. I thought maybe my CDROM drive just blew, but it happened to a friend and he has a compleltley different CDROM drive, he also is running windows xp pro, and this never happened to me on any other operating system. Also i have 2 cdrom drives the lite on 52x - D drive, and a Cyberdrive CDRW 32X12X48. and the cyber drive works aboslutely fine. Has anyone else ever had this error? When i run a cd from the drive it works fine, i use it to play morrowind and never have any problems with that, or any other game running a cd in it. And i install everything from that drive so what gives??