I just added a PCI-IDE controller card (a PCI card with an additional 2 IDE slots because I already had a master and slave on both IDE channels on my mobo and still had an extra hard drive)

Now, I went to install Red Hat 9 on the primary master on my PCI card (using the whole hd instead of a partition on the primary master)...OK, no problem installing, as anaconda detects the primary master on the PCI card as /dev/hda

Problem is, it seems the BIOS regards the primary master on my mobo as hda, not the one on my PCI card, so it tries to boot from the primary master; This means that since GRUB is installed on the MBR of the primary master on the PCI card, the BIOS completely ignores it and boots from the primary master on my mobo.

Is there any way to get GRUB on /dev/hde1 (my mobo's primary master under the Linux nomenclature) without totally reinstalling RH9 again? *has installed it 3 times now*

Boot into rescue mode and type:
/sbin/grub-install /dev/hde

This will put grub on the MBR of hde

I also installed a second PCI card with a multiple disk configuration. I have been running it since 9/11, an easy date to remember.

I did not have your problem but I did happen to see the hardware solution as I worked out my particular problems. Somewhere in Maxtor's help system there is the information on the hardware solution on how to control whether the BIOS boots from /dev/hda or /dev/hde.