Drivers will not help with an optical drive that has trouble booting (yech... that's pretty bad sentence structure

). Okay, how about this: if your optical drive has a problem with being able to recognize a CD, yet reads a DVD fine, then changing drivers will not help. Neither will it help if you are trying to
boot from the drive since those Windows drivers will never be used anyway.
Your best bet would be to try a couple of different CDs while in Windows. Commercial music CDs, data CDs (like an install program), even any CD-R or CD-RW disks that you have. If you can't read some or any CDs but you can read DVDs, then I'd say your drive has a (fairly common) problem with a defective laser pickup.
Any chance you can swap in another Ultrabay 2000 optical drive?