Thanks, DominicD. Since I posted this, I downloaded the Western Digital diagnostic & ran it. The 20GB drive was bad, not the 40GB system drive. I was so sure it was the IDE/ATA circuit that I never considered any other possibilities. The WDC WD20 had all my games on it. I do pay attention, however. I put the drive in the freezer overnight. In the morning, it ran just long enough to copy the folders to my System drive.
I'm in the process of getting my games running again.

Thanks for the reply

Byron in Ohio