GSA-4040B driver corrupt? code 39

During the install of a webcam, my system froze and had to be power cycled. A system corruption occured, losing the DVD-ROM drive which is a Hitachi badged GSA-4040B. Device manager reports a Code 39 for the driver. Microsoft support article 320553 solutions do not work, every time the device is removed it is reinstalled back with code 39. Booting from my Acer recovery CD works but proceeding down that route means wiping the disk (last resort). Ideally I would want to copy in the original files supporting the device. I have a I386 folder on my C drive with compressed system files. I just need to know the names of the files for this device. Is their a download of these available?

Unfortunately system restore points were off having forgotten to switch back on after removing spyware some time back.

System is Acer Aspire RC running Windows XP SP2

many thanks in advance