I recently changed the drive letters of my DVD ROM/CD-RW dirve and my DVD-RW drive. Since that change when I put a blank DVD RW disc in to the DVD-RW drive it states in My Computer that it is now a CD-ROM and so won't let me write anything to the blank DVD RW disc. If I put a DVD film in to the DVD-RW drive then it plays OK. I have tried changing the drive letters back to what they were but the problem still exists. The drivers are working alright. Any ideas please?