Hi All. I am having a problem burning cd's using my NEC ND 3450A. When I try to burn my cd's, I am getting an error message telling me I have dirty discs. Now I have several different brands of discs I have used and all give me the same error message. I am using Sonic record now ver 7.3. I thought maybe the programme was the problem so I tried Acoustica MP3 cd burner and got a different error message, this one says "Error write command failed on device 0:0:0 unrecoverable hardware error" I have tried uninstalling and re-installing the device driver, with no luck. Any ideas?