O.K., I have finally achieved a full kernel source load on the system. I ran the rpm --rebuild and that went through successfully.
I then attempted to install the rpm that was created. This results in:
depmod: *** Unresolved symbols in /lib/modules/2.4.18-3_isi_1/kernel/drivers/video/nvidia.o
Failed to install nvidia.o
error: execution of %post scriptlet from NVIDIA_kernel-1.0-4191 failed, exit status 1
Please advise on course to follow.