I am using the adaptec ACI-7850 SCSI controler and the panasonic 7503b. I have remove the 7503b from my 98se system and placed it into my win2000 system.. Win2000 setup the scsi card, but it kept flashing the cdr busy light like 12 times... Windows 2000 did not detect the cdr..I tried all the options to decect the cdr but no luck. I see you guys got yours to work.. Any hints on getting mine to work?