Fine, I got it working - I rebuilt the ImageMagick libraries and tweaked my server environment. It's kosher now ... except for the CB BLANK PAGES.
This had me going because I thought I might have broken Joomla/CB while I was messing with ImageMagick. But then I saw all those posts on Joomapolis about CB Blank Pages. They describe exactly what is happening to me.
The easiest way to see this problem is to click on this link:
showmefinance.com/index.php?option=com_comprofiler&task=registers
This site has a virgin Joomla 1.0.12 build on it and a fresh CB 1.0.2 build on it. Install instructions were followed precisely.
If anybody there wants admin access to the site I will email the password.