I have an older computer (1994) and it can't boot from CDROM. How can I install some sort of boot manager that lets me boot from any CD?
Take a look here - Bart's CD-Rom Boot Disk. When I had a similar issue, I used this. You can generate a floppy disk that will contain the drivers needed to boot off of a CD drive.
In addition, unless this is for someone else, if it is a machine that you have an old application on, have you thought about virtualisation?