Thanks to all those who responded. I've downloaded Yaron Danon's Digitize,
and it does the job nicely. Dr. Danon's new E-mail address is:
ydanon at bgumail.bgu.ac.il
50 Hagilad St.
Although I was able to contact him at his old address: danony at rpi.edu
Registration is $50 US, the most recent version is 1.5.
Oh, he also has an enhanced comercial version of this software for $99. I
could dig up his message and post it if anyone is interested.