After failing to find any free utilities at download.com or on Google -
I went to westerndigital.com and downloaded an app called Data
Lifeguard for Windows. I installed the drive as a secondary on a
working XP machine, installed the software and ran it with the option
"Setup a new drive." A very basic wizard guided me through the
partition and format process, and when I put the drive in the new
machine as master, XP install worked as planned.

Thank you to everyone who helped me here.

Jim