The computer can not see who, the movie on the disk (like Video-DVD) or the disc in Explorer/Nero/heap programs (as just a CD with files)? And that is exactly the RW was?
Don't remember all the details, but once upon a time I have nero6 didn't erase the drives when you installed daemon tools (because of SPTD). I later found out, and then not much was upset, because the disks didn't feel sorry for RW, and especially not yuzal.
Burn Aware try?