Operating System: Windows 98SE (Note: might work with other versions of this os.)
File: Sony cdu5221
Sony Electronics cdu5221/c1 Driver. This site was very helpfull. While I couldn't upload the atapi227b.exe file due to Sony's license agreement, I can send you the link to get to it.File Contents:
It's for W9x, xp, & 2000.
You have to have a boot disk, these are dos drivers. DOS Startup Disk