This is a new one, I have never seen CD writer software attempt to use a CD drive to burn. It sounds like your CD drive is miss-identified.
First of all, I have a concern that your system may not meet the minimum requirements for the Sony CD-RW drive. Without the model number, it is dificult to check this out at Sony's site.
The last 16X that I installed required a minimum of a 350MHz processor.
If it is indeed suppossed to work with a 233, then I would start by updating the drivers for the motherboard / chipset.
Then, remove the CD-Rom drive in device manager, and let Windows re-install the reference driver.
If nero still thinks that your CD drive is an RW drive, check for software updates from nero. They may have an error in the supported devices list.
It also may be possible to change the default device in the settings / preferences / options section of the nero software.