If your problem is non-detection, please read post #24 in this thread: [url]http://forums.driverguide.com/showthread.php?t=21669&page=4[/url]
It contains instructions on the delete the upper and lower filters fix
Also, there is a STICKY posted in this forum that contains a file from Microsoft and instructions that will do this registry edit automatically instead of having to do it manually.
And here's another method that will do this automatically for you if you're afraid to edit the registry manually.
(automatic fix, post #7, download file: CdGone.zip)