According to author:

Does Red Hat 7.2 have SCSI emulation in its kernel or do I have to install it myself? This is for burning CDs with cdrecord.

The ide-scsi driver has been included as a kernel module at least since RH 6.2, and auto-detection and configuration of an IDE CD-RW drive has been in the installer for about as long too.

For some strange reason, cdrecord only works with SCSI.

Yeah, that may be just historical, since most of these devices were only SCSI-based at first, and there was reasonably flexible support for them using the generic SCSI driver (sg) in the kernel. The ATAPI (IDE) drives implement essentially the same SCSI command set, so the ide-scsi driver was a simple and reasonable kludge to get them to work without having to rewrite a whole bunch of applications.