If the setup won't run from the CD, you can create the Setup Disks. Use the other PC, insert the CD, and search for a file named "makeboot".
Have four floppies handy. Then boot from the floppies.
Once you got to the setup screen, hit F6 to install your IDE driver. Have
your motherboard driver disk handy, just in case. In some cases, you have to install the
driver TWICE, one for each IDE controller.