I recently had some problems with my DVD drive and I installed another (Sony DRU-830A), as a slave. However, when I started Windows, the drive wasn't detected, either in "Computer" or the device manager. Then, I checked in the BIOS, and the drive was listed there. Also, I am able to boot CDs or DVDs before Windows starts, so the problem is really in Windows.
I've also tried to start Windows only with this drive, and as a master, but I still had the same problem. I've already tried to do what it says on this website, but it didn't work : http://support.microsoft.com/kb/314060. Thanks for your help!