Because the optical was not working on the Mac, I made .iso files of several app installation CD disks including Toast and Stuffit. I used a PC to make the .isos, written to a flash drive. On the Mac I copied the iso files from the flashdrive to the hard disk of OS 922 and double clicked. I got a message saying something to the effect that there was no program which could open this type of file.
My present challenge is getting Toast and some other apps installed using these iso files, since the CD drive is inop. I know that the installer CDs work when read from an optical drive (having done it in the past), but that's not an option at present. I have purchased a drive on ebay, the recommended SH2202, so perhaps that will be the solution eventually. I apologize if I was unclear earlier.