Did you select apply when you finished making your changes?
Most of the time I insert a CD into the player I am transferring data from one computer to another. Whenever I insert a CD into my player (Doesn't matter the brand, my computer has both a Plextor PX-504A and a NEC NR-9100A), I get the usual DirectCD Window telling me that I did this, but XP insists on bringing in its Autoplay window as well, asking me what to do with the disk. It does not include in this window a check box to take the same action every time it opens a disk. I have gone to properties of the disk, clicked on the Autoplay tab, clicked on the option "Select an option to perform", which removes the green dot from the "Prompt me each time to choose an action". I then selected "Take no action" and clicked on the Apply button, then the OK button, which closes the window. XP still insists on asking me each time I put the same CD into the drive, completely ignoring my previous request and the properties that I had thought I had applied to the disk. If I open the properties on the same disk again, I find the default condition has returned, and that I have to go through all of the same steps I took before, again to no avail. It has no memory. Of course if it is a music disk and I tell it that it is and to play music on it when the CD is inserted, it remembers this. I feel I am dealing with an Alzheimer's patient.