Problem solved.
While falling asleep I remembered something from a ways back. I changed the driver for the 1394 card to the ‘Legacy’ driver in Windows 7. That solved the problem.
There were discussions about this a few years back on the board. In retrospect, I’m surprised that isn’t one of the steps outlined in the section, “Solving Problems…” It should be. It would’ve saved me a little time (and some minor heartburn).